Quick filters:
Selaginella Stock Photos and Images
RMRDG4BF–. Lectures on the evolution of plants. Botany; Plants. PTEEIDOPHYTA 145 In Selaginella (Fig. 38), while the embryo closely resembles that of Lycopodium, the gametophyte is very different. The sporophyte produces two sorts of spores, large and small. The former, the macrospores, produce a rudimentary gametophyte, which bears only archegonia (Fig. 38, E). The gametophyte projects from the spore but little, and until its later stages is contained entirely within the macrospore. In germination there are first. Fig. 38 (Lycopodinese). — A, a branch of one of the smaller club-mosses (Selaginella) wi
RMRDWCM0–. Botany, with agricultural applications. Botany. GAMETOPHYTES 443 the young sporophyte until it becomes self-supporting. The female gametophyte therefore consists of many cells when mature and bears a number of archegonia on the portion exposed by the opening forced in the spore wall by the expansion of the game- tophyte. Previous to fertilization, the male gametophytes, each still, except for a small slit-Uke opening, encased in the wall of the. Fig. 395. — The gametophytes and young sporophyte of Selaginella. A, a megaspore containing a female gametophyte with the portion bearing the archeg
RMRFBP9D–. Vegetation of Oregon and Washington. Botany Oregon Ecology; Botany Washington (State) Ecology. Figure 54. — Chamaecyparis lawsoniana is found in the southern part of the Tsuga hetero- phylla Zone and attains optimal devel- opment there; note the dense under- story of evergreen shrubs (Siskiyou Na- tional Forest, Oregon). Selaginella wallacei, Xerophyllum tenax, Synthyris reniformis, Rhacomitrium canes- cens var. ericoides, Aira caryophyllea, and Ceanothus sanguineus. Acer circinatum- dominated talus communities may be found well into the Abies amabilis Zone and be in- tergraded with the Ainu
RMRDXG23–. The origin of a land flora, a theory based upon the facts of alternation. Plant morphology. EMBRYOLOGY 357 with the mode of development of these parts in mature plants. For the variability in haustorial development within the genus the study of the embryology of Lycopodium has already prepared the way. Both genera demonstrate the inconstancy of the haustorial organs of the embryo, and justify my conclusion of more than twenty years ago, that these swellings. A A Fig. 190. Embryos of Selaginella spinulosa. A-D illustrate the segmentation. I. I., first wall, separating the suspensor ; IV. IV.,
, cut vertically, showing the female gametophyte protruding from the ruptured .spore- wall (fipm) and exposing an unfertilized archegonium (ar), hut still enclosing two embryos {em}A, emb-) which have been pushed down into the nutritive prothallus {pr) by their suspensors {ct, et). (Pfeffer.)â Native home, Mexico; much cultivated. Fig. 377.âMartin's Selaginella. Emb Stock Photo")
RMRE0T5J–. Plants and their uses; an introduction to botany. Botany; Botany, Economic. THE CLUB-MOriSES 547. Fig. 376.âMartiii'a Seluginella {SelaQinella Mariensii, Sclaginella PVniily, Sclagindlacew). Gerniiiiation of macrospore (»,"), cut vertically, showing the female gametophyte protruding from the ruptured .spore- wall (fipm) and exposing an unfertilized archegonium (ar), hut still enclosing two embryos {em}A, emb-) which have been pushed down into the nutritive prothallus {pr) by their suspensors {ct, et). (Pfeffer.)â Native home, Mexico; much cultivated. Fig. 377.âMartin's Selaginella. Emb
RMRF42N0–. Vegetation of Oregon and Washington. Botany Oregon Ecology; Botany Washington (State) Ecology. Figure 54. — Chamaecyparis lawsoniana is found in the southern part of the Tsuga hetero- phylla Zone and attains optimal devel- opment there; note the dense under- story of evergreen shrubs (Siskiyou Na- tional Forest, Oregon). Selaginella wallacei, Xerophyllum tenax, Synthyris reniformis, Rhacomitrium canes- cens var. ericoides, Aira caryophyllea, and Ceanothus sanguineus. Acer circinatum- dominated talus communities may be found well into the Abies amabilis Zone and be in- tergraded with the Ainu
![. The British fern gazette. Ferns. FIGURES 1-8: Selaginella subisophylla. 1 Transverse section of main stem; 2 fertile branch tip: 3 leaves of secondary branch; 4 enlarged portion of median leaf; 5 $ sporophyll; 6 megaspore; 7 $ sporophyll; 8 microspores.. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original work.. British Pteridological Society. [s. l. ] British Pteridological Society Stock Photo](https://c8.alamy.com/comp/RH35H9/the-british-fern-gazette-ferns-figures-1-8-selaginella-subisophylla-1-transverse-section-of-main-stem-2-fertile-branch-tip-3-leaves-of-secondary-branch-4-enlarged-portion-of-median-leaf-5-sporophyll-6-megaspore-7-sporophyll-8-microspores-please-note-that-these-images-are-extracted-from-scanned-page-images-that-may-have-been-digitally-enhanced-for-readability-coloration-and-appearance-of-these-illustrations-may-not-perfectly-resemble-the-original-work-british-pteridological-society-s-l-british-pteridological-society-RH35H9.jpg ". The British fern gazette. Ferns. FIGURES 1-8: Selaginella subisophylla. 1 Transverse section of main stem; 2 fertile branch tip: 3 leaves of secondary branch; 4 enlarged portion of median leaf; 5 $ sporophyll; 6 megaspore; 7 $ sporophyll; 8 microspores.. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original work.. British Pteridological Society. [s. l. ] British Pteridological Society Stock Photo")
RMRH35H9–. The British fern gazette. Ferns. FIGURES 1-8: Selaginella subisophylla. 1 Transverse section of main stem; 2 fertile branch tip: 3 leaves of secondary branch; 4 enlarged portion of median leaf; 5 $ sporophyll; 6 megaspore; 7 $ sporophyll; 8 microspores.. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original work.. British Pteridological Society. [s. l. ] British Pteridological Society
![. The structure and development of mosses and ferns (Archegoniatae). Plant morphology; Mosses; Ferns. 5H MOSSES AND FERNS CSAf. at no time in 5*. Kraussiana are they confined to this apical region, as Miss Lyon states is the case in 6". apus. With the increase in the amount of protoplasm, the very large central vacuole becomes reduced in size, and finally, but this does not occur until after the germination of the spore, is. Fig. 2g6.—A, Young macrospore of Selaginella helvetica. The vesicular protoplast, with the primary nucleus, is much smaller than the spore membranes, X 400; B-E, S, K Stock Photo](https://c8.alamy.com/comp/RDF1DH/the-structure-and-development-of-mosses-and-ferns-archegoniatae-plant-morphology-mosses-ferns-5h-mosses-and-ferns-csaf-at-no-time-in-5-kraussiana-are-they-confined-to-this-apical-region-as-miss-lyon-states-is-the-case-in-6quot-apus-with-the-increase-in-the-amount-of-protoplasm-the-very-large-central-vacuole-becomes-reduced-in-size-and-finally-but-this-does-not-occur-until-after-the-germination-of-the-spore-is-fig-2g6a-young-macrospore-of-selaginella-helvetica-the-vesicular-protoplast-with-the-primary-nucleus-is-much-smaller-than-the-spore-membranes-x-400-b-e-s-k-RDF1DH.jpg ". The structure and development of mosses and ferns (Archegoniatae). Plant morphology; Mosses; Ferns. 5H MOSSES AND FERNS CSAf. at no time in 5*. Kraussiana are they confined to this apical region, as Miss Lyon states is the case in 6". apus. With the increase in the amount of protoplasm, the very large central vacuole becomes reduced in size, and finally, but this does not occur until after the germination of the spore, is. Fig. 2g6.—A, Young macrospore of Selaginella helvetica. The vesicular protoplast, with the primary nucleus, is much smaller than the spore membranes, X 400; B-E, S, K Stock Photo")
RMRDF1DH–. The structure and development of mosses and ferns (Archegoniatae). Plant morphology; Mosses; Ferns. 5H MOSSES AND FERNS CSAf. at no time in 5*. Kraussiana are they confined to this apical region, as Miss Lyon states is the case in 6". apus. With the increase in the amount of protoplasm, the very large central vacuole becomes reduced in size, and finally, but this does not occur until after the germination of the spore, is. Fig. 2g6.—A, Young macrospore of Selaginella helvetica. The vesicular protoplast, with the primary nucleus, is much smaller than the spore membranes, X 400; B-E, S, K
RMRDWEXA–. Nature and development of plants. Botany. 358 MALE GAMETOPHYTE OF ZAMIA be compared with that of Selaginella (Fig. 247, A); the cell (g) representing the small cell, and the cell (a) corresponding to the large antheridial cell of the gametophyte of Selaginella (Fig. 243, i), while the cell (t) called the tube cell, represents a new depar- ture in the evolution of the male gametophyte. The tube cell. Fig. 247. Male gametophyte of Zamia: A, stage of germination of the microspore attained in the sporangium. See text for explanation of figures. B, formation of tube for absorbing of food from meg
RMRF42NA–. Vegetation of Oregon and Washington. Botany Oregon Ecology; Botany Washington (State) Ecology. Figure 54. — Chamaecyparis lawsoniana is found in the southern part of the Tsuga hetero- phylla Zone and attains optimal devel- opment there; note the dense under- story of evergreen shrubs (Siskiyou Na- tional Forest, Oregon). Selaginella wallacei, Xerophyllum tenax, Synthyris reniformis, Rhacomitrium canes- cens var. ericoides, Aira caryophyllea, and Ceanothus sanguineus. Acer circinatum- dominated talus communities may be found well into the Abies amabilis Zone and be in- tergraded with the Ainu
RMRE2F9T–. Fundamentals of botany. Botany. CALAMITES AND LYCOPODS 387 recognized at once as a new feature in life history. By successive divisions the protoplasm of the spore becomes a multicellular body, the prothallus, with richer cells near the apex. Here a number of archegonia form (Fig. 283), and the enlargement of the prothallus, or gametophyte, causes a splitting apart of the old, thick walls of the megaspore, so that the female gametophyte protrudes (Fig. 284, 9).. Fig. 283.—Selaginella Kraussiana, C, section of mature female gam- etophyte, showing three archegonia, two containing eggs, and one
RMRDWAN2–. Plants; a text-book of botany. Botany. 166 PLAiNT STEUCTOKES leaf (Fig. 139). This is important as showing that sporan- gia may be produced by stems as well as by leaves, those being produced by leaves being called foliar, and those by stem cauline. Thg most important fact in connection with Selaginella, however, is that it is heterosporous. Megasporangia, each usually containing but four megaspores, are found in the axils of a few of the lower leaves of the strobilus, and more numerous microsporangia occur in the upper axils, con- taining very many microspores (Fig. 139). The character of t
![. Botany for academies and colleges: consisting of plant development and structure from seaweed to clematis. Botany; 1889. perature. 71.— Among the Club- Mosses is the Selaginella, of which so many fine species are or- naments of our green-houses; often climbing; with lace-like Fig. 41.—A, Vert. sec. of germiiiuting macrospore of SeluyinelUt Martenrii. Prothallus with root-hairs, above the line d; below this, the perisperm which fills the spore; e, e, embryos in the iircheponia. ]i, same, further advanced; two plants with their first leaves, springing from the prothal- lus^. C, microspore, sho Stock Photo](https://c8.alamy.com/comp/RDHCW8/botany-for-academies-and-colleges-consisting-of-plant-development-and-structure-from-seaweed-to-clematis-botany-1889-perature-71-among-the-club-mosses-is-the-selaginella-of-which-so-many-fine-species-are-or-naments-of-our-green-houses-often-climbing-with-lace-like-fig-41a-vert-sec-of-germiiiuting-macrospore-of-seluyinelut-martenrii-prothallus-with-root-hairs-above-the-line-d-below-this-the-perisperm-which-fills-the-spore-e-e-embryos-in-the-iircheponia-i-same-further-advanced-two-plants-with-their-first-leaves-springing-from-the-prothal-lus-c-microspore-sho-RDHCW8.jpg ". Botany for academies and colleges: consisting of plant development and structure from seaweed to clematis. Botany; 1889. perature. 71.— Among the Club- Mosses is the Selaginella, of which so many fine species are or- naments of our green-houses; often climbing; with lace-like Fig. 41.—A, Vert. sec. of germiiiuting macrospore of SeluyinelUt Martenrii. Prothallus with root-hairs, above the line d; below this, the perisperm which fills the spore; e, e, embryos in the iircheponia. ]i, same, further advanced; two plants with their first leaves, springing from the prothal- lus^. C, microspore, sho Stock Photo")
RMRDHCW8–. Botany for academies and colleges: consisting of plant development and structure from seaweed to clematis. Botany; 1889. perature. 71.— Among the Club- Mosses is the Selaginella, of which so many fine species are or- naments of our green-houses; often climbing; with lace-like Fig. 41.—A, Vert. sec. of germiiiuting macrospore of SeluyinelUt Martenrii. Prothallus with root-hairs, above the line d; below this, the perisperm which fills the spore; e, e, embryos in the iircheponia. ]i, same, further advanced; two plants with their first leaves, springing from the prothal- lus^. C, microspore, sho
RMRDTWDJ–. Botany for high schools and colleges. Botany. 112 BOTANY. the bundles are curiously isolated from the surrounding ground tissues of the steni. 141.—The bundle of the nearly related Lycopodium com- planatum is much more complex in its structure (Fig. 101). Here there are four parallel plates of tracheary tissue, each having a structure like the single plate of the bundle of Selaginella incBquifolia. Between the tracheary plates there is in each case a row of sieve tubes imbedded in a lignified tissue composed of elongated cells (sclerenchynia, or fibrous. Fig. 101.—Cross-section of the stem o
RMRDH0C9–. A textbook of botany for colleges and universities ... Botany. 6o8 ECOLOGY leaf or even a leaf in which the basal asymmetry is reversed, while leaves commonly symmetrical in like manner may be induced to become asymmetrical. Anisophylly is well illustrated by such a plant as Selaginella (fig. 896), which has two sorts of leaves, large and small, more or less regularly placed in relation to each other, and also by the leafy liverworts, which have two dorsal rows of green leaves and a ventral row of small, colorless leaves (am- phigastria). Anisophylly, like asymmetry, is believed to be due to
RMRDYFD0–. A textbook of botany for colleges and universities ... Botany. cells contribute to the nutrition of 40-75 mother cells that function. These mother cells become relatively very large and produce large spores, the total output of megaspores being 150-300 (fig. 317). Both kinds of spores escape by the decay of the sporangium wall. Male gametophyte.—The male gametophyte is still more simple than that of Selaginella (figs. 318-320). It consists of a single vegetative cell and a single antheridium, as in Selaginella; but the sperm mother cells are only four in number. This is the lowest number rea
![. A general system of botany, descriptive and analytical. In two parts. Part I. Outlines of organography, anatomy, and physiology. Part II. Descriptions and illustrations of the orders. By Emm. Le Maout [and] J. Decaisne. With 5500 figures by L. Steinheil and A. Riocreux. Translated from the original by Mrs. Hooker. The orders arranged after the method followed in the universities and schools of Great Britain, its colonies, America, and India; with additions, an appendix on the natural method, and a synopsis of the orders, by J.D. Hooker. Botany. Selaginella. Micro-sporangium (mag.).. Selagi?i Stock Photo](https://c8.alamy.com/comp/RDWY6P/a-general-system-of-botany-descriptive-and-analytical-in-two-parts-part-i-outlines-of-organography-anatomy-and-physiology-part-ii-descriptions-and-illustrations-of-the-orders-by-emm-le-maout-and-j-decaisne-with-5500-figures-by-l-steinheil-and-a-riocreux-translated-from-the-original-by-mrs-hooker-the-orders-arranged-after-the-method-followed-in-the-universities-and-schools-of-great-britain-its-colonies-america-and-india-with-additions-an-appendix-on-the-natural-method-and-a-synopsis-of-the-orders-by-jd-hooker-botany-selaginella-micro-sporangium-mag-selagii-RDWY6P.jpg ". A general system of botany, descriptive and analytical. In two parts. Part I. Outlines of organography, anatomy, and physiology. Part II. Descriptions and illustrations of the orders. By Emm. Le Maout [and] J. Decaisne. With 5500 figures by L. Steinheil and A. Riocreux. Translated from the original by Mrs. Hooker. The orders arranged after the method followed in the universities and schools of Great Britain, its colonies, America, and India; with additions, an appendix on the natural method, and a synopsis of the orders, by J.D. Hooker. Botany. Selaginella. Micro-sporangium (mag.).. Selagi?i Stock Photo")
RMRDWY6P–. A general system of botany, descriptive and analytical. In two parts. Part I. Outlines of organography, anatomy, and physiology. Part II. Descriptions and illustrations of the orders. By Emm. Le Maout [and] J. Decaisne. With 5500 figures by L. Steinheil and A. Riocreux. Translated from the original by Mrs. Hooker. The orders arranged after the method followed in the universities and schools of Great Britain, its colonies, America, and India; with additions, an appendix on the natural method, and a synopsis of the orders, by J.D. Hooker. Botany. Selaginella. Micro-sporangium (mag.).. Selagi?i
RMRH8W3P–. Botany of the living plant. Botany. 322 BOTANY OF THE LIVING PLANT spermatozoids. As both types of spore germinate together, fertilisation is readily carried out. After fertilisation the zygote secretes a protective wall, and elongating in the axis of the archegonium, segments repeatedly (VL-VIII.) to form a suspensor [s) which, as in the Gymnosperms, thrusts the embryo down deep into the prothallus (IV.). The distal cell soon enlarges, and divides. It gives rise centrally to the apex of the stem {st), with. Embryology of Selaginella denticulata, after Bruchmann. I.-III. ( x 12^) show germin
![. Field, forest, and wayside flowers; with chapters on grasses, sedges, and ferns; untechnical studies for unlearned lovers of nature. Flowers; Botany. The Seniors of the Forest 291 vegetative cell, and beside it, a little chamber full of spermatozoids. And in the larger spore mean- time there is formed a "female" prothallus, which soon grows big enough to rupture the spore-wall and protrudes through the fissure it has made.. Fig. 82.—A larger {" macro ") and two smaller (" micro ") spores of Selaginella martensii (the Lycopodium stoloniferum of florists). All mag Stock Photo](https://c8.alamy.com/comp/RDX0M6/field-forest-and-wayside-flowers-with-chapters-on-grasses-sedges-and-ferns-untechnical-studies-for-unlearned-lovers-of-nature-flowers-botany-the-seniors-of-the-forest-291-vegetative-cell-and-beside-it-a-little-chamber-full-of-spermatozoids-and-in-the-larger-spore-mean-time-there-is-formed-a-quotfemalequot-prothallus-which-soon-grows-big-enough-to-rupture-the-spore-wall-and-protrudes-through-the-fissure-it-has-made-fig-82a-larger-quot-macro-quot-and-two-smaller-quot-micro-quot-spores-of-selaginella-martensii-the-lycopodium-stoloniferum-of-florists-all-mag-RDX0M6.jpg ". Field, forest, and wayside flowers; with chapters on grasses, sedges, and ferns; untechnical studies for unlearned lovers of nature. Flowers; Botany. The Seniors of the Forest 291 vegetative cell, and beside it, a little chamber full of spermatozoids. And in the larger spore mean- time there is formed a "female" prothallus, which soon grows big enough to rupture the spore-wall and protrudes through the fissure it has made.. Fig. 82.—A larger {" macro ") and two smaller (" micro ") spores of Selaginella martensii (the Lycopodium stoloniferum of florists). All mag Stock Photo")
RMRDX0M6–. Field, forest, and wayside flowers; with chapters on grasses, sedges, and ferns; untechnical studies for unlearned lovers of nature. Flowers; Botany. The Seniors of the Forest 291 vegetative cell, and beside it, a little chamber full of spermatozoids. And in the larger spore mean- time there is formed a "female" prothallus, which soon grows big enough to rupture the spore-wall and protrudes through the fissure it has made.. Fig. 82.—A larger {" macro ") and two smaller (" micro ") spores of Selaginella martensii (the Lycopodium stoloniferum of florists). All mag
RMRDW9RY–. Botany for high schools and colleges. Botany. ISOETEJE. 387 than six or seven species occurring witliin the limits of tlie United States. Many are cultivated as ornaments. Order Isoeteee, the Quill worts. The prothallia of the Isoetese are dioe- cious, and resemble closely those of Selaginella. The macrospores give rise to small prothallia, which project through the triangular slit in the spore-wall, and bear several or many sunken archegonia (Fig. 279). The microspores, in their germination, first cut off a small cell («, Fig. 280, A to P), which, as in Sdaginella, represents the prothalliu
RMRGJY8A–. Bulletin of the British Museum (Natural History). Botany; Botany. SELAGINELLA IN TROPICAL SOUTH AMERICA 295. f 3 .'JV f. ma t FLORA OF COLOMI H'l SPECIMEN Fig. 15 Selaginella ovifolia subsp. philipsonii Jermy & Rankin: Type specimen, Philipson, Idrobo and Fernandez 1607a (BM).. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original work.. British Museum (Natural History). London : The Museum
![. Botany of the living plant. Botany; Plants. LYCOPODIAU-.S 513 But most living species have a much-branched, dorsiventral shoot of an " espalier " type, sometimes simulating highly compound lea- (Fig. 405). On these shoots the actual leaves are disposed in four longitudinal rows, those on the lower Hanks being larger, those on the upper smaller. Such shoots are commonly propped up by root-like organs (rhizophores) borne at the forkings of the shoot, and themselves showing very regular dichotomy. They are not actually roots, but. Fig. 404 b. Plant of Selaginella spinulosa, with root- Stock Photo](https://c8.alamy.com/comp/RH8P3A/botany-of-the-living-plant-botany-plants-lycopodiau-s-513-but-most-living-species-have-a-much-branched-dorsiventral-shoot-of-an-quot-espalier-quot-type-sometimes-simulating-highly-compound-lea-fig-405-on-these-shoots-the-actual-leaves-are-disposed-in-four-longitudinal-rows-those-on-the-lower-hanks-being-larger-those-on-the-upper-smaller-such-shoots-are-commonly-propped-up-by-root-like-organs-rhizophores-borne-at-the-forkings-of-the-shoot-and-themselves-showing-very-regular-dichotomy-they-are-not-actually-roots-but-fig-404-b-plant-of-selaginella-spinulosa-with-root-RH8P3A.jpg ". Botany of the living plant. Botany; Plants. LYCOPODIAU-.S 513 But most living species have a much-branched, dorsiventral shoot of an " espalier " type, sometimes simulating highly compound lea- (Fig. 405). On these shoots the actual leaves are disposed in four longitudinal rows, those on the lower Hanks being larger, those on the upper smaller. Such shoots are commonly propped up by root-like organs (rhizophores) borne at the forkings of the shoot, and themselves showing very regular dichotomy. They are not actually roots, but. Fig. 404 b. Plant of Selaginella spinulosa, with root- Stock Photo")
RMRH8P3A–. Botany of the living plant. Botany; Plants. LYCOPODIAU-.S 513 But most living species have a much-branched, dorsiventral shoot of an " espalier " type, sometimes simulating highly compound lea- (Fig. 405). On these shoots the actual leaves are disposed in four longitudinal rows, those on the lower Hanks being larger, those on the upper smaller. Such shoots are commonly propped up by root-like organs (rhizophores) borne at the forkings of the shoot, and themselves showing very regular dichotomy. They are not actually roots, but. Fig. 404 b. Plant of Selaginella spinulosa, with root-
RMRDJ8W7–. Plant life and plant uses; an elementary textbook, a foundation for the study of agriculture, domestic science or college botany. Botany. CLUB MOSSES 427 facts about Selaginella which forecast the habits of seed plants and throw light upon their evolution. Not only are there two kinds of spores produced, but these spores are produced separately in two kinds of'sporangia. And not only are there these two kinds of spo- rangia, but these sporangia are produced separately on two kinds ofsporophylls. (See Figure 220.) And these facts are also true of seed plants. In what way are these two kinds o
![. Florists' review [microform]. Floriculture. Skftbhbicb 12, 1912. The Florists^ Review 29 THE FLORISTS' SUPPLY HOUSE OF AMERICA Magnolia Leaves—Very desirable for making up into wreathe, etc. A stock of Magnolia Leayes secured now will turn spare time to account. American Oalc Sprays—Green, bronze and leather-colored ; very effective by themselves or with ' other foliage. Ornamental Grasses—Acutifolia, green and tipped with all good flower colors. Adiantum—Very choice, also tipped in colors. Selaginella—Affords pleasing variety. Velour-finisiied Acutifolia —Velour-finislied Ruscus Popular for Stock Photo](https://c8.alamy.com/comp/RRXCN1/florists-review-microform-floriculture-skftbhbicb-12-1912-the-florists-review-29-the-florists-supply-house-of-america-magnolia-leavesvery-desirable-for-making-up-into-wreathe-etc-a-stock-of-magnolia-leayes-secured-now-will-turn-spare-time-to-account-american-oalc-spraysgreen-bronze-and-leather-colored-very-effective-by-themselves-or-with-other-foliage-ornamental-grassesacutifolia-green-and-tipped-with-all-good-flower-colors-adiantumvery-choice-also-tipped-in-colors-selaginellaaffords-pleasing-variety-velour-finisiied-acutifolia-velour-finislied-ruscus-popular-for-RRXCN1.jpg ". Florists' review [microform]. Floriculture. Skftbhbicb 12, 1912. The Florists^ Review 29 THE FLORISTS' SUPPLY HOUSE OF AMERICA Magnolia Leaves—Very desirable for making up into wreathe, etc. A stock of Magnolia Leayes secured now will turn spare time to account. American Oalc Sprays—Green, bronze and leather-colored ; very effective by themselves or with ' other foliage. Ornamental Grasses—Acutifolia, green and tipped with all good flower colors. Adiantum—Very choice, also tipped in colors. Selaginella—Affords pleasing variety. Velour-finisiied Acutifolia —Velour-finislied Ruscus Popular for Stock Photo")
RMRRXCN1–. Florists' review [microform]. Floriculture. Skftbhbicb 12, 1912. The Florists^ Review 29 THE FLORISTS' SUPPLY HOUSE OF AMERICA Magnolia Leaves—Very desirable for making up into wreathe, etc. A stock of Magnolia Leayes secured now will turn spare time to account. American Oalc Sprays—Green, bronze and leather-colored ; very effective by themselves or with ' other foliage. Ornamental Grasses—Acutifolia, green and tipped with all good flower colors. Adiantum—Very choice, also tipped in colors. Selaginella—Affords pleasing variety. Velour-finisiied Acutifolia —Velour-finislied Ruscus Popular for
RMRE0NT4–. Elementary botany. Botany. nucellar cap. Only one end of the endosperm 271. upper end of the endcipcrm (prothallium) are aid us in determining what portion is the female prothallium. The nucellus is of course formed before the prothallium. The latter arises from a cell (macro- spore) near the center of the nucellus. This cell is larger, and has a larger nucleus than its fellows (see fig. 268). The prothallium here is formed much in the same way as in selaginella, where we recollect it begins to de- velop before the macrospore has. Fig. 269. Fig. 270. Section of ovule of white pine, int, inte
RMRJYTG2–. Aspects of plant life; with special reference to the British flora. Plants. THE SACRED GINKGO 163 Races which once formed vast and lofty forests are now represented by a few lowly herbs; and it is diffi- cult to recognize in the tiny Selaginella of our moors the representative of the gigantic Club-mosses of Car- boniferous days. But certain plants still living retain. Fig, 27.—Leaf of Maidenhair Tree (Ginkgo biloba). §. to a great extent the features of their ancestors of the ancient rocks. One of the most interesting of these is the Maidenhair Tree (Ginkgo, biloba), well known as a sacred t
RMRDWAKK–. Botany for high schools and colleges. Botany. 112 BOTANY. the bundles are curiously isolated from the surrounding ground tissues of the stem. 141.—The bundle of the nearly related Lycopodium com- planatum is much more complex in its structure (Fig. 101). Here there are four parallel plates of tracheary tissue, each having a structure like the single plate of the bundle of Selaginella incequifolia. Between the tracheary plates there is in each case a row of sieve tubes imbedded in a lignified tissue composed of elongated cells (sclerenchyma, or fibrous. Fig. 101.—Crose-eection of the stem of
RMRDCY51–. Botany for agricultural students . Botany. FEMALE GAMETOPHYTE 449 sporangium as in Selaginella, but a new feature of tiie Cycads is that the megasporangium does not open to allow the megaspore to be exposed, and therefore the female gametophyte remains permanently enclosed in the sporangium. The developing female gametophyte uses most of the nucellus for food and thereby makes room for itself. When the gametophyte is mature the. Fig. 399. — Section through a Cycad ovule containing a mature gameto- phyte. /, female gametophyte with two archegonia (a) shown; m, micro- spores developing tubes,
RMRDC7N8–. Studies in fossil botany . Paleobotany. 184 STUDIES IN FOSSIL BOTANY evident that all the upper part of the cone was occupied by microsporangia, and the lower by megasporangia, as in most species of Selaginella at the present day (Fig. 74). Fig. 72 represents a transverse section from the upper, and Fig. 73 one from the lower part of the cone; the former shows microsporangia, the latter megasporangia only. The structure of the sporangium is similar to that of,. Fig. 73.—Lepidostrobus Veltheimianus. Transverse section of cone, through megaspore- region. sp., sporophylls (only partially shown)
RMRE3N8H–. A handbook of cryptogamic botany. Cryptogams. 5° VASCULAR CRYPTOGAMS proceeds a branch into each leaf and one into the root. The layer of meristem which surrounds the axial bundle increases chiefly in the centrifugal direction, fresh layers thus formed replacing the outer ones, which continually die off. The secondary long-enduring increase in thickness of the stem is chiefly due to increase in thickness of the cortical tissue, though new xylem-elements are also produced. The mode of apical growth differs from that in most species of Selaginella. There is no single apical cell, the apex of t
![. An introduction to the structure and reproduction of plants. Plant anatomy; Plants. 320 SELAGINELLA to a terrestrial existence. Associated with the last-named feature we see the differentiation of proper conducting tissue and of true roots. Tliere is, moreover, a marked tendencj'' towards. Fig. iS^.—Sehi^iiwlhi, pruthallia and embryulogy. a. front view, and b. vertical section of mature megaspore witlr female jirothallus ; c, older embryo ; d, spermatozoid ; e, archegonium in longitudinal section ; /, microspore with contained male prothallus ; i;. voung plant still attached to the megas])or Stock Photo](https://c8.alamy.com/comp/RDWP62/an-introduction-to-the-structure-and-reproduction-of-plants-plant-anatomy-plants-320-selaginella-to-a-terrestrial-existence-associated-with-the-last-named-feature-we-see-the-differentiation-of-proper-conducting-tissue-and-of-true-roots-tliere-is-moreover-a-marked-tendencj-towards-fig-issehiiiwlhi-pruthallia-and-embryulogy-a-front-view-and-b-vertical-section-of-mature-megaspore-witlr-female-jirothallus-c-older-embryo-d-spermatozoid-e-archegonium-in-longitudinal-section-microspore-with-contained-male-prothallus-i-voung-plant-still-attached-to-the-megas-or-RDWP62.jpg ". An introduction to the structure and reproduction of plants. Plant anatomy; Plants. 320 SELAGINELLA to a terrestrial existence. Associated with the last-named feature we see the differentiation of proper conducting tissue and of true roots. Tliere is, moreover, a marked tendencj'' towards. Fig. iS^.—Sehi^iiwlhi, pruthallia and embryulogy. a. front view, and b. vertical section of mature megaspore witlr female jirothallus ; c, older embryo ; d, spermatozoid ; e, archegonium in longitudinal section ; /, microspore with contained male prothallus ; i;. voung plant still attached to the megas])or Stock Photo")
RMRDWP62–. An introduction to the structure and reproduction of plants. Plant anatomy; Plants. 320 SELAGINELLA to a terrestrial existence. Associated with the last-named feature we see the differentiation of proper conducting tissue and of true roots. Tliere is, moreover, a marked tendencj'' towards. Fig. iS^.—Sehi^iiwlhi, pruthallia and embryulogy. a. front view, and b. vertical section of mature megaspore witlr female jirothallus ; c, older embryo ; d, spermatozoid ; e, archegonium in longitudinal section ; /, microspore with contained male prothallus ; i;. voung plant still attached to the megas])or
![. The book of choice ferns for the garden, conservatory. and stove : describing and giving explicit cultural directions for the best and most striking ferns and selaginellas in cultivation. Illustrated with coloured plates amd numerous wood engravings. Identification; Ferns. CHAPTER XXIV, SELAGINELLA, Spring. (Sel-a-gin-el'-la.) Club Mosses. N his exhaustive and excellent work, the " Handbook of the Fern-Allies," Mr. J. Gr. Baker very succinctly enumerates and describes those plants which, like Ferns, produce spores from which they are or may be readily increased. Under the appellati Stock Photo](https://c8.alamy.com/comp/RHDGH9/the-book-of-choice-ferns-for-the-garden-conservatory-and-stove-describing-and-giving-explicit-cultural-directions-for-the-best-and-most-striking-ferns-and-selaginellas-in-cultivation-illustrated-with-coloured-plates-amd-numerous-wood-engravings-identification-ferns-chapter-xxiv-selaginella-spring-sel-a-gin-el-la-club-mosses-n-his-exhaustive-and-excellent-work-the-quot-handbook-of-the-fern-alliesquot-mr-j-gr-baker-very-succinctly-enumerates-and-describes-those-plants-which-like-ferns-produce-spores-from-which-they-are-or-may-be-readily-increased-under-the-appellati-RHDGH9.jpg ". The book of choice ferns for the garden, conservatory. and stove : describing and giving explicit cultural directions for the best and most striking ferns and selaginellas in cultivation. Illustrated with coloured plates amd numerous wood engravings. Identification; Ferns. CHAPTER XXIV, SELAGINELLA, Spring. (Sel-a-gin-el'-la.) Club Mosses. N his exhaustive and excellent work, the " Handbook of the Fern-Allies," Mr. J. Gr. Baker very succinctly enumerates and describes those plants which, like Ferns, produce spores from which they are or may be readily increased. Under the appellati Stock Photo")
RMRHDGH9–. The book of choice ferns for the garden, conservatory. and stove : describing and giving explicit cultural directions for the best and most striking ferns and selaginellas in cultivation. Illustrated with coloured plates amd numerous wood engravings. Identification; Ferns. CHAPTER XXIV, SELAGINELLA, Spring. (Sel-a-gin-el'-la.) Club Mosses. N his exhaustive and excellent work, the " Handbook of the Fern-Allies," Mr. J. Gr. Baker very succinctly enumerates and describes those plants which, like Ferns, produce spores from which they are or may be readily increased. Under the appellati
RMRDWCM3–. Botany, with agricultural applications. Botany. SPOROPHYTE 441 Sporophyte. — The sporophytes are delicate plants with leafy much branched stems {Fig. 393). The strobiU occur on the ends of the branches, and the sporophylls somewhat resemble the foli- age leaves, but are usually smaller and more compact {Fig. 394). One notable feature is that there are two kinds of spores pro- duced. In Bryophytes, True Ferns, Horsetails, and Lycopo-. me Fig. 394. — The vegetative and spore-bearing structures of the sporo- phyte of Selaginella. A, a shoot of Selaginella, showing the stem, vegetative leaves, a
RMRH4W0J–. Botany for high schools. Botany. OTHER FERN-LIKE PLANTS: CLUB MOSSES 349 Spores, which means large spores. The upper spore cases produce a very large number of small spores {microspores). Since the spores are of different sizes, Selaginella is said to be a heterosporus plant. A plant is homosporus when the spores are all alike. 518. The prothallia or gamete plants (gametophytes) of Selaginella.—The gamete plants of Selaginella are dicx'ceous (or heterothallic). This condition of the prothallium is deter- mined in the spore. The small spores (microspores) pro- duce small male gamete plants. T
RMRF0AFH–. Plant life and plant uses; an elementary textbook, a foundation for the study of agriculture, domestic science or college botany. Botany. CLUB MOSSES 429 This formula also indicates the life history of any seed plant, except that in seed plants there may be two kinds of strobili. Surely Selaginella throws light upon the evolution of seed plants ! We are not yet done, however. There is yet another feature of Selaginella to be considered which is also a feature of seed plants. This other feature is that the game- tophytes do not escape from the spores which produce them. No. Fig. 221. — Sectio
RMRDXGMN–. The origin of a land flora, a theory based upon the facts of alternation. Plant morphology. Fig Selaginella spinulosa, A. Br. Section of megasporangium showing the single fertile tetrad still very small, and the rest of the sporogenous cells arrested, x 100. Fit;. 52. [soetes lacuslris, L. Vertical section of a young microsporangium. .f/ = fertile tissue. tr= trabeculae. ^=tapetum. X too. while the remainder forms microspores. From the history of development,, and from comparison, the conclusion seems justified that the trabeculae and tapetum in this case represent sporogenous tissue which h
RMRH92T7–. Botany for high schools and colleges. Botany. mOETEJE. 387 than six or seven species occurring within the limits of tlie United States. Many are cultivated as ornaments. Order Isoetese, the Quillworts. The prothallia of the Isoeteae are dioe- cious, and resemble closely those of SeUiginella. The macrospores give rise to small prothallia, which project through the triangular slit in the spore-wall, and bear several or many sunken archegonia (Fig. 279). The microspores, in their germination, first cut off a small cell ('y, Fig. 280, A to C), which, as in Selaginella, represents the prothallium
RMRPWXRJ–. Text-book of botany, morphological and physiological. Botany. 476 VASCULAR CRYPTOGAMS. consist, in /. lacustris, of only a small lamina, but in the terrestrial species are destitute even of this, and are simply cataphyllary leaves (phyllades). The leaves of Selaginella are never more than a few millimetres in length, and are usually cordate at the base with a narrow insertion, acuminate, and from lanceo- late to ovate in form. In the greater number of species the sterile leaves are of two different sizes, the ventral leaves attached to the under or shaded side of the obliquely ascending stem
RMRDXH2R–. The origin of a land flora, a theory based upon the facts of alternation. Plant morphology. B, megasporangium of Selaginella apus in median vertical section, showing three of the four megaspores. Xsi. A, a single megaspore, with prothallus and an archegonium, more highly magnified. (After Miss Lyon.) contiriued apical growth and terminal strobili. These are constructed essentially upon the Lycopodinous plan, but instead of the sporangia, being all alike, some contain numerous small microspores, others contain. Please note that these images are extracted from scanned page images that may have
RMRE0B3E–. General physiology; an outline of the science of life. . FjG. 88.—Seed of the crane's bill (Erodium cicv tarium), a, in the dry, &, in the swollen state. upon their inner side. The well-known rose of Jericho, which is simply the dry, dead branch of a crucifer (Anastatica) growing in the Arabian deserts, behaves similarly. Its spreading when placed in water has led to the common belief that the rose of Jericho is resurrected to a new life, while in reality the phenomenon depends merely upon the swelling-movements of the dead branch. Selaginella, however, is a real resurrection-plant in so
RMRE0PJN–. Nature and development of plants. Botany. 356 THE MEGASPORANGIUM however, present several new departures that must be borne in mind. A rather thick coat or integument covers the sporan- gium save for a small opening called the micropyle (Fig. 245, 3^). The integument will be a feature in all the succeeding groups and it has been compared to a highly modified indusium. It origi- nates, however, from the base of the sporangium rather than from the epidermis as in the common forms. As in Selaginella, only one of the mother cells takes part in the formation of spores and but one megaspore (inste
RMRF675M–. Native and exotic plants, trees & shrubs. Nursery stock Florida Catalogs; Nurseries (Horticulture) Florida Catalogs; Tropical plants Catalogs; Palms Catalogs; Fruit trees Seedlings Catalogs; Plants, Ornamental Catalogs. Selaginella cuspidata. (See opposite page.) NEPHROLEPIS exaltata, continued, basket plant, and with long leaves of fine appear- ance. We grow this largely. 10 cts. and 20 cts. each. N. exaltata Bostonlensis. The famed Boston Fern. This differs from the type only in attaining greater size and length of fronds. It is a splendid decorative plant, especially fine for baskets,
RMRDWEXJ–. Nature and development of plants. Botany. 356 THE MEGASPORANGIUM however, present several new departures that must be borne in mind. A rather thick coat or integument covers the sporan- gium save for a small opening called the micropyle (Fig. 245, zA). The integument will be a feature in all the succeeding groups and it has been compared to a highly modified indusium. It origi- nates, however, from the base of the sporangium rather than from the epidermis as in the common forms. As in Selaginella, only one of the mother cells takes part in the formation of spores and but one megaspore (inste
RMRFE3E0–. Native and exotic plants, trees & shrubs. Nursery stock Florida Catalogs; Nurseries (Horticulture) Florida Catalogs; Tropical plants Catalogs; Palms Catalogs; Fruit trees Seedlings Catalogs; Plants, Ornamental Catalogs. Selaginella cuspidata. (See opposite page.) NEPHROLEPIS exaltata, continued, basket plant, and with long leaves of fine appear- ance. We grow this largely. 10 cts. and 20 cts. each. N. exaltata Bostonlensis. The famed Boston Fern. This differs from the type only in attaining greater size and length of fronds. It is a splendid decorative plant, especially fine for baskets,
RMRDXN0Y–. The origin of a land flora, a theory based upon the facts of alternation. Plant morphology. Fig. 74. Selaginella Martensii, Spring. Radial section of a strobilus, including apex (aj>), and traversing a young sporophyll (/), and sporangium (x). Also another section of sporophyll and sporangium, rather older. X365. Fig. 75. Radial sections through young sporangia of Lycopodium Selago. In the youngest the whole sporophyll is shown (/), and the axis (si), and it is seen that the sporangium arises upon the surface of the sporophyll. X 200. of the early fossil Spencerites (Fig. 76), in which th
RMRDXG7X–. The origin of a land flora, a theory based upon the facts of alternation. Plant morphology. 3i8 LYCOPODIALES In Isoetes the position of the large sporangium, between the ligule and the axis, corresponds to that in Selaginella, though it is here more definitely inserted on the leaf-base, and is sunk in a deep depression of its upper surface (Fig. 155 b, c, d) ; but these differences of detail do not obscure the essential unity of the plan in the two genera. Instead of being a body more or less flattened between the sporophyll and the axis, as in Lycopodium and Selaginella, the sporangium is h
RMRE9905–. Cool orchids, and how to grow them : with a descriptive list of all the best species in cultivation. COOL OllCUIU HOUSES. 20' having been watered or damped down, it is a good plan in practice to cover them with a thin layer of cannel coal, brokeiL up small and carefully washed. In addition to this, the benches m.ay also be made to hold water, which, during the hot summer months, will be highly conducive to the health and vigour of the plants. The space bordering on the path beneath the side benches may be planted with Selaginella hortensis, which will soon form a fresh green carpet and. Cool
![. Cyclopedia of American horticulture, comprising suggestions for cultivation of horticultural plants, descriptions of the species of fruits, vegetables, flowers, and ornamental plants sold in the United States and Canada, together with geographical and biographical sketches. Gardening. SELAGIXKLLA cu-^pidate, dentieulate on the upper side at the base; Ivs. of the upper pUine very small, ovate-obk)nir. Snid to rome from Lowt-r California. Iiut not known at Kew and doubtfully in fultiv:ition in this cnuntrv. SELAGINELLA 1649 ^^f" — N 2304. Poorl grown specimen ot Club Mosi unsuitable ior Stock Photo](https://c8.alamy.com/comp/RE2C7D/cyclopedia-of-american-horticulture-comprising-suggestions-for-cultivation-of-horticultural-plants-descriptions-of-the-species-of-fruits-vegetables-flowers-and-ornamental-plants-sold-in-the-united-states-and-canada-together-with-geographical-and-biographical-sketches-gardening-selagixklla-cu-pidate-dentieulate-on-the-upper-side-at-the-base-ivs-of-the-upper-puine-very-small-ovate-obknir-snid-to-rome-from-lowt-r-california-iiut-not-known-at-kew-and-doubtfully-in-fultivition-in-this-cnuntrv-selaginella-1649-fquot-n-2304-poorl-grown-specimen-ot-club-mosi-unsuitable-ior-RE2C7D.jpg ". Cyclopedia of American horticulture, comprising suggestions for cultivation of horticultural plants, descriptions of the species of fruits, vegetables, flowers, and ornamental plants sold in the United States and Canada, together with geographical and biographical sketches. Gardening. SELAGIXKLLA cu-^pidate, dentieulate on the upper side at the base; Ivs. of the upper pUine very small, ovate-obk)nir. Snid to rome from Lowt-r California. Iiut not known at Kew and doubtfully in fultiv:ition in this cnuntrv. SELAGINELLA 1649 ^^f" — N 2304. Poorl grown specimen ot Club Mosi unsuitable ior Stock Photo")
RMRE2C7D–. Cyclopedia of American horticulture, comprising suggestions for cultivation of horticultural plants, descriptions of the species of fruits, vegetables, flowers, and ornamental plants sold in the United States and Canada, together with geographical and biographical sketches. Gardening. SELAGIXKLLA cu-^pidate, dentieulate on the upper side at the base; Ivs. of the upper pUine very small, ovate-obk)nir. Snid to rome from Lowt-r California. Iiut not known at Kew and doubtfully in fultiv:ition in this cnuntrv. SELAGINELLA 1649 ^^f" — N 2304. Poorl grown specimen ot Club Mosi unsuitable ior
![. Elementary botany. Botany. GYMNOSPERMS: WHITE PINE. 505 So it would appear that these. divisions of a mother cell in the nucellu three or four cells are all spores. Only one of them, however, the lower one, develops; the others are disorganized and disappear. The nucleus of the macrospore now divides several times to form several free nuclei in the now enlarg- ing cavity, much as the nu- cleus of the macrospore in Pig. 357. Selaginella and Isoetes divides . P°"«n g'f "5 °[ P'"e. One of them genriinat- ° mg. p' and p^, the two disintegrated prothalhal within the spore. The de- Stock Photo](https://c8.alamy.com/comp/RE2M90/elementary-botany-botany-gymnosperms-white-pine-505-so-it-would-appear-that-these-divisions-of-a-mother-cell-in-the-nucellu-three-or-four-cells-are-all-spores-only-one-of-them-however-the-lower-one-develops-the-others-are-disorganized-and-disappear-the-nucleus-of-the-macrospore-now-divides-several-times-to-form-several-free-nuclei-in-the-now-enlarg-ing-cavity-much-as-the-nu-cleus-of-the-macrospore-in-pig-357-selaginella-and-isoetes-divides-pquotn-gf-quot5-pquote-one-of-them-genriinat-mg-p-and-p-the-two-disintegrated-prothalhal-within-the-spore-the-de-RE2M90.jpg ". Elementary botany. Botany. GYMNOSPERMS: WHITE PINE. 505 So it would appear that these. divisions of a mother cell in the nucellu three or four cells are all spores. Only one of them, however, the lower one, develops; the others are disorganized and disappear. The nucleus of the macrospore now divides several times to form several free nuclei in the now enlarg- ing cavity, much as the nu- cleus of the macrospore in Pig. 357. Selaginella and Isoetes divides . P°"«n g'f "5 °[ P'"e. One of them genriinat- ° mg. p' and p^, the two disintegrated prothalhal within the spore. The de- Stock Photo")
RMRE2M90–. Elementary botany. Botany. GYMNOSPERMS: WHITE PINE. 505 So it would appear that these. divisions of a mother cell in the nucellu three or four cells are all spores. Only one of them, however, the lower one, develops; the others are disorganized and disappear. The nucleus of the macrospore now divides several times to form several free nuclei in the now enlarg- ing cavity, much as the nu- cleus of the macrospore in Pig. 357. Selaginella and Isoetes divides . P°"«n g'f "5 °[ P'"e. One of them genriinat- ° mg. p' and p^, the two disintegrated prothalhal within the spore. The de-
RMRDH0WT–. A textbook of botany for colleges and universities ... Botany. Si6 ECOLOGY In Washington and in British Columbia the hemlock often germinates on stumps, logs, or standing trees, and has a subsequent history somewhat compa- rable to that of Ficus in the tropics. The banyan habit is illustrated on a small scale by Selaginella, especially in moist chamber cultures, where there develop rhizophores with numerous root hairs (figs. 735, 896). In the mangrove, roots are put forth much as in Ficus, but they branch profusely in the air and spread out laterally (fig. 741). So abundant are these roots i
Search Results for Selaginella Stock Photos and Images (1,753)
Page 13 of 18