Code
MAPSQ
Growth form
Sedge
Biological cycle
Annual
Habitat
Terrestrial
MAPSQ
Growth form
Sedge
Biological cycle
Annual
Habitat
Terrestrial
🗒 Synonyms
| synonym | Chlorocyperus inflexus (Muhl.) Palla |
| synonym | Cyperus aristatus f. falciculosus (Liebm.) Kük. |
| synonym | Cyperus aristatus f. inflexus (Muhl.) C.B.Clarke |
| synonym | Cyperus aristatus Rottb., nom. superfl. |
| synonym | Cyperus aristatus var. floribundus E.G.Camus |
| synonym | Cyperus aristatus var. inflexus (Muhl.) Boeckeler ex Kük. |
| synonym | Cyperus aristatus var. runyonii O'Neill |
| synonym | Cyperus aristatus var. semiglobosus Kük. |
| synonym | Cyperus aristatus var. versicolor (Nees) Boeckeler |
| synonym | Cyperus arsitatus var. perennis M.E.Jones |
| synonym | Cyperus aureus J.Presl & C.Presl, nom. illeg. |
| synonym | Cyperus brownii Roem. & Schult. |
| synonym | Cyperus falciculosus Liebm. |
| synonym | Cyperus inflexus Muhl. |
| synonym | Cyperus inflexus var. acaulis Hook.f. |
| synonym | Cyperus inflexus var. elongatus Hook.f. |
| synonym | Cyperus purshii Roem. & Schult. |
| synonym | Cyperus pygmaeus Nutt., nom. illeg. |
| synonym | Cyperus squarrosus var. congestus Benth. |
| synonym | Cyperus squarrosus var. cylindraceus Benth. |
| synonym | Cyperus squarrosus var. runyonii (O'Neill) S.D.Jones & Wipff |
| synonym | Cyperus uncinatus R.Br., nom. illeg. |
| synonym | Cyperus versicolor Nees |
| synonym | Dichostylis aristata (Rottb.) Palla |
| synonym | Dichostylis squarrosa (L.) Palla |
| synonym | Isolepis echinulata Kunth |
| synonym | Mariscus aristatus (Rottb.) Cherm., nom. illeg. |
| synonym | Mariscus intricatus (L.) Cufod. |
| synonym | Mariscus squarrosus (L.) C.B.Clarke |
| synonym | Pycreus squarrosus (L.) Nees |
| synonym | Scirpus intricatus L. |
| synonym | Scirpus lappaceus Lam. |
🗒 Common Names
| No Data |
📚 Overview
Description
Global description
Cyperus squarrosus is a small tufted sedge species with linear leaves with a broad V section and a bluish green color. The inflorescences are simple or compound umbels, whose rays bear at the end a head formed of numerous spikelets. The spikelets are formed of 8 to 12 glumes surmounted by a long apicule curved back. The fruit is an obovoid trigonal achene topped with a trifid style.
First leaves
The first leaves are linear with a limb long acute, bluish green color. The limb section is V wide. The margin is entire. At the base, the sheaths are short and fit together tristically.
General habit
Cyperus squarrosus is in small tuft from which develop many flowering axes. A tuft measures 8 to 20 cm
height and 10 to 20 cm in diameter.
Underground system
The roots are fasciculate. They are simple, filiform and very numerous, of fibrous aspect.
Stem
The stem corresponds to the floriferous axis. It is solid with triangular section at sharp angles, 1 to 2 mm wide. The faces are glabrous.
Leaf
The leaves are linear, arranged tristically and are located at the base of the plant. They are 5 to 15 cm long and 3 to 5 mm wide. The summit of the limb is in cunate; the section is V-shaped wide. The margin is entire. At the base of the limb is a closed sheath of triangular section. Both sides are glabrous and bluish green.
Inflorescence
The flowers are grouped in spikelets, themselves assembled by 10 to 25 in hemispherical heads at the end of the floriferous axis and at the end of the rays of the inflorescence. The inflorescence is a simple umbel, sometimes composed. It is subtended by 3 linear leafy bracts, of variable length.
Spikelet
The spikelets are compressed, they are formed of 8 to 12 glumes weakly imbricated and arranged in 2 rows. The glumes are 1.2 mm long and have at the apex a curved back apicle, 1 mm long. The ovary is surmounted by a trifid style beyond the glumes. The inflorescence is golden yellow. The whole spikelet comes off at maturity.
Fruit
The fruits are obovoid trigonal achenes with concave faces 1.3 mm long and 0.8 mm wide. They are surmounted by a trifid style. The tegument, light brown, is smooth.
Cyperus squarrosus is a small tufted sedge species with linear leaves with a broad V section and a bluish green color. The inflorescences are simple or compound umbels, whose rays bear at the end a head formed of numerous spikelets. The spikelets are formed of 8 to 12 glumes surmounted by a long apicule curved back. The fruit is an obovoid trigonal achene topped with a trifid style.
First leaves
The first leaves are linear with a limb long acute, bluish green color. The limb section is V wide. The margin is entire. At the base, the sheaths are short and fit together tristically.
General habit
Cyperus squarrosus is in small tuft from which develop many flowering axes. A tuft measures 8 to 20 cm
height and 10 to 20 cm in diameter.
Underground system
The roots are fasciculate. They are simple, filiform and very numerous, of fibrous aspect.
Stem
The stem corresponds to the floriferous axis. It is solid with triangular section at sharp angles, 1 to 2 mm wide. The faces are glabrous.
Leaf
The leaves are linear, arranged tristically and are located at the base of the plant. They are 5 to 15 cm long and 3 to 5 mm wide. The summit of the limb is in cunate; the section is V-shaped wide. The margin is entire. At the base of the limb is a closed sheath of triangular section. Both sides are glabrous and bluish green.
Inflorescence
The flowers are grouped in spikelets, themselves assembled by 10 to 25 in hemispherical heads at the end of the floriferous axis and at the end of the rays of the inflorescence. The inflorescence is a simple umbel, sometimes composed. It is subtended by 3 linear leafy bracts, of variable length.
Spikelet
The spikelets are compressed, they are formed of 8 to 12 glumes weakly imbricated and arranged in 2 rows. The glumes are 1.2 mm long and have at the apex a curved back apicle, 1 mm long. The ovary is surmounted by a trifid style beyond the glumes. The inflorescence is golden yellow. The whole spikelet comes off at maturity.
Fruit
The fruits are obovoid trigonal achenes with concave faces 1.3 mm long and 0.8 mm wide. They are surmounted by a trifid style. The tegument, light brown, is smooth.
Thomas Le Bourgeois
| Attributions | |
| Contributors | |
| Status | UNDER_CREATION |
| Licenses | CC_BY |
| References |
There is content in another language. Please click here to read it. (Français)
No Data
📚 Nomenclature and Classification
No Data
📚 Natural History
Life Cycle
There is content in another language. Please click here to read it. (Français)
Northern Cameroon: Cyperus squarrosus is a species of middle and especially of the end of the crop cycle. Germination occurs in July or August when rains are abundant and regular. The germination phase lasts 1 to 2 weeks. Flowering takes place in August and September for 2 to 3 weeks. The fructification occurs quickly and ends at the beginning of the dry season (early November) with the drying of the plant. This species has a short development cycle (4 to 10 weeks) characteristic of late-season plants.
Thomas Le Bourgeois
| Attributions | |
| Contributors | |
| Status | UNDER_CREATION |
| Licenses | CC_BY |
| References |
Ecology
There is content in another language. Please click here to read it. (Français)
Northern Cameroon: Cyperus squarrosus is a heliophilous species that grows especially in open places and in low cover crops. It grows on light soils, well drained, especially on ferruginous soils and sandy-loam alluvial soils. It is absent from very clay soils such as vertic soils. It is found mainly in plots cultivated for 5 to 10 years.
Thomas Le Bourgeois
| Attributions | |
| Contributors | |
| Status | UNDER_CREATION |
| Licenses | CC_BY |
| References |
No Data
📚 Habitat and Distribution
General Habitat
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Worldwide distribution
Cyperus squarrosus is widely distributed throughout tropical Africa.
Cyperus squarrosus is widely distributed throughout tropical Africa.
Thomas Le Bourgeois
| Attributions | |
| Contributors | |
| Status | UNDER_CREATION |
| Licenses | CC_BY |
| References |
No Data
📚 Occurrence
No Data
📚 Demography and Conservation
Risk Statement
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Local harmfulness
Northern Cameroon: Cyperus squarrosus is a heliophilous species that grows especially in open spaces and in low cover crops. It grows on light soils that drain well, especially on ferruginous soils and sandy-loam alluvial soils. It is absent from very clay soils such as vertisols. It is found mainly in plots cultivated for 5 to 10 years.
Northern Cameroon: Cyperus squarrosus is a heliophilous species that grows especially in open spaces and in low cover crops. It grows on light soils that drain well, especially on ferruginous soils and sandy-loam alluvial soils. It is absent from very clay soils such as vertisols. It is found mainly in plots cultivated for 5 to 10 years.
Thomas Le Bourgeois
| Attributions | |
| Contributors | |
| Status | UNDER_CREATION |
| Licenses | CC_BY |
| References |
No Data
📚 Uses and Management
📚 Information Listing
Global Biodiversity Information Facility (GBIF)
There is content in another language. Please click here to read it. (Français)
Thomas Le Bourgeois
| Attributions | |
| Contributors | |
| Status | UNDER_CREATION |
| Licenses | CC_BY |
| References |
References
- Le Bourgeois, T. and H. Merlier (1995). Adventrop - Les adventices d'Afrique soudano-sahélienne. Montpellier, France, Cirad.637p.
- Hutchinson J., Dalziel J. M., Keay R. W. J. & Hepper F. N., 1972. Flora of West Tropical Africa. Vol. III part. 2. 2ème éd. The Whitefriars Press ed., London & Tonbridge, 574p.
- Vanden Berghen C., 1982. Matériaux pour une flore de la végétation herbacée de la Casamance occidentale, Sénégal, Fascicule 1, Cyperaceae. Jardin Botanique National de Belgique, 40p.
- Le Bourgeois Th., 1993. Les mauvaises herbes dans la rotation cotonnière au Nord-Cameroun (Afrique) - Amplitude d'habitat et degré d'infestation - Cycle de développement. Thèse USTL Montpellier II, Montpellier, France, 241p.
Information Listing > References
- Le Bourgeois, T. and H. Merlier (1995). Adventrop - Les adventices d'Afrique soudano-sahélienne. Montpellier, France, Cirad.637p.
- Hutchinson J., Dalziel J. M., Keay R. W. J. & Hepper F. N., 1972. Flora of West Tropical Africa. Vol. III part. 2. 2ème éd. The Whitefriars Press ed., London & Tonbridge, 574p.
- Vanden Berghen C., 1982. Matériaux pour une flore de la végétation herbacée de la Casamance occidentale, Sénégal, Fascicule 1, Cyperaceae. Jardin Botanique National de Belgique, 40p.
- Le Bourgeois Th., 1993. Les mauvaises herbes dans la rotation cotonnière au Nord-Cameroun (Afrique) - Amplitude d'habitat et degré d'infestation - Cycle de développement. Thèse USTL Montpellier II, Montpellier, France, 241p.
Images
Herbarium pictures ReCOLNAT: https://explore.recolnat.org/search/botanique/simplequery=Cyperus%2520squarrosus
Thomas Le Bourgeois
| Attributions | |
| Contributors | |
| Status | UNDER_CREATION |
| Licenses | CC_BY |
| References |
There is content in another language. Please click here to read it. (Français)
No Data
🐾 Taxonomy
| Root | Root |
| Kingdom | Plantae |
| Phylum | Tracheophyta |
| Class | Liliopsida |
| Order | Poales |
| Family | Cyperaceae |
| Genus | Cyperus |
| Species | Cyperus squarrosus L. |
📊 Temporal Distribution
📷 Related Observations
