Pandanaceae

Taxonomy

Family name: Pandanaceae R. Brown

Synonym(s): [none]

Common name(s): screw-pine family

*Number of genera/species: 5/982

List of genera records in GRIN-Global

Disseminule

fruit

Description

Fruit indehiscentindehiscent:
not opening on its own, as in a fruit
, simplesimple:
fruit formed from a single flower with one pistil, solitary carpel or several fused carpels
or multiplemultiple:
fruit formed from several flowers clustered in one mass
, drupedrupe:
(indehiscent drupe) a fleshy, indehiscent fruit with one more hard pits enclosing seeds; (dehiscent drupe) a fruit with a dry or fibrous to fleshy or leathery outer husk that early to tardily breaks apart (or opens), exposing one or more nutlike pits enclosing the seeds
or berryberry:
an indehiscent, fleshy fruit with one or a few to many seeds. The flesh may be homogenous throughout. Or, if the outer part is hard, firm, or leathery, referred to as an hesperidium. Septa are present in some, and the seeds may be arillate or with a fleshy testa.
, 12–300 mm long, globoseglobose:
3D shape—more or less spherical
to squaresquare:
2D shape—geometric figure bounded by 4 straight sides of equal length and 4 90º-angles
, tereteterete:
approximately circular in cross section; width and thickness approximately equal
to angledangled:
2D shape—having sides that meet at acute or obtuse angles  
in transectiontransection:
a cross section; representing a plane made by cutting across an organ at a right angle to its length
, one seeded or many seeded. Drupedrupe:
(indehiscent drupe) a fleshy, indehiscent fruit with one more hard pits enclosing seeds; (dehiscent drupe) a fruit with a dry or fibrous to fleshy or leathery outer husk that early to tardily breaks apart (or opens), exposing one or more nutlike pits enclosing the seeds
pericarp white, yellow, orange to red, fibrousfibrous:
texture—long, flexible threads, thicker than hairs, that densely cover and obscure the surface
, fleshyfleshy:
texture—fairly firm and dense, juicy or at least moist, and easily cut
, woodywoody:
consisting mainly of indurate lignified tissues, characteristic of or resembling wood
, indurateindurate:
texture—hardened or stony; yielding under strong pressure; not deformable without internal structural disruption
, or chartaceouschartaceous:
=papery, papyraceous
, smooth, ribbedribbed:
surface relief—wide, prominent, linear ridges that are generally rounded and longitudinally situated on the surface
, ridgedridged:
surface relief—raised, thick ridges, sharp edged or rounded, usually in a series that may cover the entire surface
, pustularpustular:
surface relief—with small blisters or pustules
, or wartywarty:
surface relief—distinct, rounded projections that are large relative to the fruit size; tuberculate, verrucose
.

In Freycinetia, berriesberries:
an indehiscent, fleshy fruit with one or a few to many seeds. The flesh may be homogenous throughout. Or, if the outer part is hard, firm, or leathery, referred to as an hesperidium. Septa are present in some, and the seeds may be arillate or with a fleshy testa.
are in heads of 10–10,000, fleshyfleshy:
texture—fairly firm and dense, juicy or at least moist, and easily cut
or ligneousligneous:
woody
, with firmfirm:
texture—yielding under only moderately strong pressure; only slightly deformable without internal structural disruption
apicesapices:
the point farthest from the point of attachment, or the "tip" of an organ
and fleshyfleshy:
texture—fairly firm and dense, juicy or at least moist, and easily cut
bases, many seeded. Sararanga also has berriesberries:
an indehiscent, fleshy fruit with one or a few to many seeds. The flesh may be homogenous throughout. Or, if the outer part is hard, firm, or leathery, referred to as an hesperidium. Septa are present in some, and the seeds may be arillate or with a fleshy testa.
but with carpels in a distinctive biseriatebiseriate:
arranged in two rows; e.g. seeds arranged in two rows within a locule
sinuous row.

In the remaining genera, fruits are drupesdrupes:
(indehiscent drupe) a fleshy, indehiscent fruit with one more hard pits enclosing seeds; (dehiscent drupe) a fruit with a dry or fibrous to fleshy or leathery outer husk that early to tardily breaks apart (or opens), exposing one or more nutlike pits enclosing the seeds
often produced in a head and free to connate and with seeds bound to the endocarpendocarp:
the inner layer of the pericarp, if divided into layers
and germinating within the fruit. In Benstonea (formally Pandanus), drupesdrupes:
(indehiscent drupe) a fleshy, indehiscent fruit with one more hard pits enclosing seeds; (dehiscent drupe) a fruit with a dry or fibrous to fleshy or leathery outer husk that early to tardily breaks apart (or opens), exposing one or more nutlike pits enclosing the seeds
are free, monocarpellarymonocarpellary:
ovary or fruit having one carpel
, one seeded, and with stigmasstigmas:
the portion of the pistil receptive to pollen
on the abaxialabaxial:
dorsal; on the side that is away from the axis (in nutlets, the side facing outwards); (compare adaxial)
side of the persistent sharp, linearlinear:
(shape) long, narrow, and uniform in width; (of embryo) embryo is straight and much longer than wide
styles. In Pandanus, drupesdrupes:
(indehiscent drupe) a fleshy, indehiscent fruit with one more hard pits enclosing seeds; (dehiscent drupe) a fruit with a dry or fibrous to fleshy or leathery outer husk that early to tardily breaks apart (or opens), exposing one or more nutlike pits enclosing the seeds
are free or connate, fibrousfibrous:
texture—long, flexible threads, thicker than hairs, that densely cover and obscure the surface
, multicarpellate, several seeded, and with the stigmasstigmas:
the portion of the pistil receptive to pollen
on the adaxialadaxial:
ventral; on the side that is towards the axis (in nutlets, the side facing inwards), (compare abaxial)
side of the stylestyle:
in a flower, the narrow and elongated part of the pistil between the stigma and the ovary; sometimes persisting in fruit
, which is variously shaped but rarely sharp and linearlinear:
(shape) long, narrow, and uniform in width; (of embryo) embryo is straight and much longer than wide
. In Martellidendron, drupesdrupes:
(indehiscent drupe) a fleshy, indehiscent fruit with one more hard pits enclosing seeds; (dehiscent drupe) a fruit with a dry or fibrous to fleshy or leathery outer husk that early to tardily breaks apart (or opens), exposing one or more nutlike pits enclosing the seeds
are in oblongoblong:
2D shape—much longer than broad with nearly parallel sides, corners are rounded
, tubuliformtubuliform:
having the form of a tube or cylinder
, or sphericalspherical:
3D shape—globose
heads, with two opposite stigmasstigmas:
the portion of the pistil receptive to pollen
at the apexapex:
the point farthest from the point of attachment, or the "tip" of an organ
forming a cross with staminodesstaminodes:
a modified, sterile stamen
at the base.

Seed variable depending on the genus. In Sararanga and Freycinetia, seeds are small, compressedcompressed:
flattened; in grasses, used to denote compression (not necessarily flattened) either laterally or dorsiventrally
, straight, sometimes curvedcurved:
(of embryo) linear embryo is curved into an arch or horseshoe with the ends far apart
in Freycinetia, with thickthick:
having or being of relatively great depth
seed coats. Seeds in Freycinetia often develop what appears to be a strophiolestrophiole:
appendage or outgrowth of seed coat near the hilum and micropyle
. In the other genera, seeds are larger, fusiformfusiform:
spindle-shaped; broadest at the middle and tapering at both ends
to obovoidobovoid:
3D shape—obovate
, compressedcompressed:
flattened; in grasses, used to denote compression (not necessarily flattened) either laterally or dorsiventrally
, with thinthin:
having or being of relatively little depth
, membranousmembranous:
texture—extremely thin, pliable, and fairly tough
seed coats.

Embryo well developed, small, linearlinear:
(shape) long, narrow, and uniform in width; (of embryo) embryo is straight and much longer than wide
, straight. Endospermendosperm:
nutritive starch- and oil-containing tissue present in many seeds
copious, fleshyfleshy:
texture—fairly firm and dense, juicy or at least moist, and easily cut
.

Identification features

Fruit
Type berry, indehiscentindehiscent:
not opening on its own, as in a fruit
drupe
Size range 12–300 mm long
Shape(s) cylindrical, ovoidovoid:
3D shape—ovate
, globoseglobose:
3D shape—more or less spherical
, angularangular:
2D shape—having sides that meet at acute or obtuse angles  
, ellipsoidellipsoid:
3D shape—elliptic
, triangulartriangular:
2D shape—three relatively straight sides with distinct corners; more angular than teardrop-shaped
, squaresquare:
2D shape—geometric figure bounded by 4 straight sides of equal length and 4 90º-angles
, ellipsoid
Texture fibrous, fleshyfleshy:
texture—fairly firm and dense, juicy or at least moist, and easily cut
, woodywoody:
consisting mainly of indurate lignified tissues, characteristic of or resembling wood
, chartaceouschartaceous:
=papery, papyraceous
, indurate
Surface relief smooth, ribbedribbed:
surface relief—wide, prominent, linear ridges that are generally rounded and longitudinally situated on the surface
, ridgedridged:
surface relief—raised, thick ridges, sharp edged or rounded, usually in a series that may cover the entire surface
, pustularpustular:
surface relief—with small blisters or pustules
, warty
Color(s) orange, red, white, yellow
Unique features Often brightly colored, large drupesdrupes:
(indehiscent drupe) a fleshy, indehiscent fruit with one more hard pits enclosing seeds; (dehiscent drupe) a fruit with a dry or fibrous to fleshy or leathery outer husk that early to tardily breaks apart (or opens), exposing one or more nutlike pits enclosing the seeds
(falling singly or in multiples), angularangular:
2D shape—having sides that meet at acute or obtuse angles  
, with fleshyfleshy:
texture—fairly firm and dense, juicy or at least moist, and easily cut
to woodywoody:
consisting mainly of indurate lignified tissues, characteristic of or resembling wood
pericarps.
Seed
Size range 3.2–15 mm long
Shape(s) ovoid, fusiformfusiform:
spindle-shaped; broadest at the middle and tapering at both ends
, triangular
Surface relief smooth, wrinkledwrinkled:
surface relief—shallow, irregular folds and furrows covering the surface; appearing overall though crumpled and then spread out
, reticulatereticulate:
surface relief—netted, raised walls or concave grooves forming a net-like surface pattern with flat, concave, or convex interspaces
, striate
Color(s) black
Unique features Black seeds, fusiformfusiform:
spindle-shaped; broadest at the middle and tapering at both ends
to triangulartriangular:
2D shape—three relatively straight sides with distinct corners; more angular than teardrop-shaped
, compressedcompressed:
flattened; in grasses, used to denote compression (not necessarily flattened) either laterally or dorsiventrally
, straight or curvedcurved:
(of embryo) linear embryo is curved into an arch or horseshoe with the ends far apart
, with thinthin:
having or being of relatively little depth
or thickthick:
having or being of relatively great depth
coats.
Other
Embryo well developed, small, linearlinear:
(shape) long, narrow, and uniform in width; (of embryo) embryo is straight and much longer than wide
, straight
Nutritive tissuenutritive tissue:
tissue within the seeds that nourishes the developing embryo; such as endosperm, perisperm, or chalazosperm in angiosperms; megagametophyte in gymnosperms
endosperm endosperm:
nutritive starch- and oil-containing tissue present in many seeds
copious, fleshy

Distribution

Paleotropics, with a few temperate species.

Distribution map courtesy of Angiosperm Phylogeny Website.

References

Baskin and Baskin 2021Baskin and Baskin 2021:
Baskin C and Baskin J. 2021. Relationship of the lateral embryo (in grasses) to other monocot embryos: A status up-grade. Seed Science Research 31 (3): 199-210. doi:10.1017/S0960258521000209
; Beentje 1993Beentje 1993:
Beentje H. 1993. Pandanaceae. In: Polhill RM, ed. Flora of Tropical East Africa. Vol 136. AA Balkema, Rotterdam Netherlands. 9 pp.
; Dahlgren et al. 1985Dahlgren et al. 1985:
Dahlgren RMT, Clifford HT, and Yeo PF. 1985. The families of the monocotyledons: structure, evolution, and taxonomy. Springer-Verlag, Berlin. 520 pp.
; Flora of Australia 2021+Flora of Australia 2021+:
Flora of Australia. Australian Biological Resources Study, Canberra. Accessed January-May 2021. URL: http://www.ausflora.org.au
; Kirkbride et al. 2006Kirkbride et al. 2006:
Kirkbride JH, Jr, Gunn CR, and Dallwitz MJ. 2006. Family guide for fruits and seeds, vers. 1.0. Accessed September 2020ndash;January 2022. URL: https://nt.ars-grin.gov/seedsfruits/keys/frsdfam/index.cfm .
; Kubitzki et al. 1990+Kubitzki et al. 1990+:
Kubitzki K et al., eds. 1990+. The families and genera of vascular plants. 7+ vols. Berlin etc.
; van Welzen 2011van Welzen 2011:
van Welzen PC. 2011. Pandaceae. Flora Malesiana 20: 15ndash;43.
; Zhengyi et al. 2004+Zhengyi et al. 2004+:
Zhengyi W, Raven PH, and Deyuan H. 2004+. Flora of China [online]. 25 vols. Science Press, Beijing China amp; Missouri Botanical Garden, St. Louis USA. Accessed January-December 2021. http://flora.huh.harvard.edu/china/

*The number of genera and species is based on Christenhusz and Byng 2016Christenhusz and Byng 2016:
Christenhusz MJM and Byng JW. 2016. The number of known plant species in the world and its annual increase. Phytotaxa 261 (3): 201ndash;217. https://doi.org/10.11646/phytotaxa.261.3.1
, which may differ from the number of genera in GRIN-Global.

  Fruit:   Pandanus furcatus ; Photo by R. Gibbons, USDA APHIS PPQ, Kirkbride et al. (2006)

Fruit: Pandanus furcatus; Photo by R. Gibbons, USDA APHIS PPQ, Kirkbride et al. (2006)

  Fruit:   Pandanus furcatus ; Photo by R. Gibbons, USDA APHIS PPQ, Kirkbride et al. (2006)

Fruit: Pandanus furcatus; Photo by R. Gibbons, USDA APHIS PPQ, Kirkbride et al. (2006)

  Fruits :  Pandanus tectorius ; Photo by Lyndon Photography, Dried Botanical ID

Fruits: Pandanus tectorius; Photo by Lyndon Photography, Dried Botanical ID

  Fruits :  Pandanus tectorius ; Photo by Lyndon Photography, Dried Botanical ID

Fruits: Pandanus tectorius; Photo by Lyndon Photography, Dried Botanical ID

  Seed:   Pandanus tectorius ; Photo by R. Gibbons, USDA APHIS PPQ, Kirkbride et al. (2006)

Seed: Pandanus tectorius; Photo by R. Gibbons, USDA APHIS PPQ, Kirkbride et al. (2006)

  Embryo:   Pandanus affinis ; Illustration by K. Parker, Kirkbride et al. (2006)

Embryo: Pandanus affinis; Illustration by K. Parker, Kirkbride et al. (2006)

  Infructescence :  Pandanus tectorius ; Photo by K.E. Clancy, USDA APHIS PPQ, imageID.idtools.org
Infructescence: Pandanus tectorius; Photo by K.E. Clancy, USDA APHIS PPQ, imageID.idtools.org
  Infructescence :  Pandanus tectorius ; Photo by K.E. Clancy, USDA APHIS PPQ, imageID.idtools.org
Infructescence: Pandanus tectorius; Photo by K.E. Clancy, USDA APHIS PPQ, imageID.idtools.org
  Infructescence :  Freycinetia cumingiana ; Photo by R. Wallace, University of Georgia, bugwood.org
Infructescence: Freycinetia cumingiana; Photo by R. Wallace, University of Georgia, bugwood.org
  Embryo:   Freycinetia banksii ; Illustration by K. Parker, Kirkbride et al. (2006)

Embryo: Freycinetia banksii; Illustration by K. Parker, Kirkbride et al. (2006)

  Embryo:   Sararanga philippinensis ; Illustration by K. Parker, Kirkbride et al. (2006)

Embryo: Sararanga philippinensis; Illustration by K. Parker, Kirkbride et al. (2006)

  Fruit, seed, embryo :  Pandanus  sp.; Illustration by L. Steinheil and A. Riocreux, A general system of botany (1873), courtesy of L. Watson and M.J. Dallwitz, 1992 onwards

Fruit, seed, embryo: Pandanus sp.; Illustration by L. Steinheil and A. Riocreux, A general system of botany (1873), courtesy of L. Watson and M.J. Dallwitz, 1992 onwards