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Image of Coastal-Plain Flat Sedge
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Coastal Plain Flat Sedge

Cyperus cuspidatus Kunth

Comments

provided by eFloras
The description is based on N. Indian specimens, which rarely show such compact clusters of spikes as the plants of S India.
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Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
bibliographic citation
Flora of Pakistan Vol. 206: 147 in eFloras.org, Missouri Botanical Garden. Accessed Nov 12, 2008.
source
Flora of Pakistan @ eFloras.org
editor
S. I. Ali & M. Qaiser
project
eFloras.org
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Description

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Herbs, annual, cespitose. Culms 1–6(–25), trigonous to roundly trigonous, (0.5–)2–5(–9) cm × 0.2–0.4–(0.6) mm, glabrous. Leaves 1–6, V-shaped, 1–6 cm × 0.3–1 mm. Inflorescences: heads digitate, loosely ovoid, 3–18 × 3–26 mm; rays (0–)1–6(–8), 2.5–20(–30) mm; bracts 2–3(–5), horizontal to ascending at 45(–60)°, V-shaped, 2–60 × 0.3–1.2 mm. Spikelets (3–)10–20(–30), greenish to reddish brown, narrowly ellipsoid to oblong, 3–11 × (0.8–)1.2–1.5 mm; floral scales (3–)6–20(–28), laterally greenish to reddish brown, glossy, medially greenish to light reddish brown, strongly recurved, laterally ribless, medially strongly 3-ribbed, oblong-ovate, (0.8–)1–1.3 × 0.8–1(–1.2) mm, apex emarginate, cusp 0.6–1.2 mm. Flowers: stamens 2 or 3; anthers oblong-ovoid, 0.1(–0.2) mm; styles (0.2–)0.4–0.6 mm; stigmas 0.3–0.5 mm. Achenes brown, oblong-obovoid, (0.5–)0.6 × (0.3–)0.4 mm, base cuneate, apex blunt, surfaces coarsely papillose.
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cc-by-nc-sa-3.0
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Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
bibliographic citation
Flora of North America Vol. 23: 143, 156, 158 in eFloras.org, Missouri Botanical Garden. Accessed Nov 12, 2008.
source
Flora of North America @ eFloras.org
editor
Flora of North America Editorial Committee
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eFloras.org
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eFloras

Description

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Annual, 4-12 cm, forming small tufts. Stem to 0.5 mm diam., obtusely trigonous, smooth. Leaves to as long as stems; sheaths up to 15 mm, yellowish or reddish brown, mouth margin slightly concave; ligule 0; blades up to 80 mm, less than 1 mm wide, margins inrolled, smooth, apex slightly scabrous. Inflorescence a small multiple spike, often reduced to a single cluster of spikes, up to 40 mm; primary branches 0-5, to 35 mm; lowest 2-3 bracts foliose, to 80 x 1.5 mm, spreading. Cluster of spikes 5-20 mm diam., with 4-20 digitately arranged spikes; spikes 2-12 x 2-3 mm, flat, with from 4 to more than 30 glumes; glume-like bract c. 1.5 mm, glume-like prophyll c. 1 mm, scarious, bi-nerved; rachis c. 0.2 mm wide, compressed, 4-angled, reddish brown or greenish, very narrowly winged, often re-branching at axil of prophyll; glumes 1.5-2 mm, truncate, 3-nerved, nerves prominent, ending in a reflexed arista, c. 0.5 mm, mid-nerve area green with some reddish dots, nerve-less sides wide, yellowish or reddish-brown. Stamens 3. Nut c. 0.5 mm, obovoid, trigonous, brown, papillose.
license
cc-by-nc-sa-3.0
copyright
Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
bibliographic citation
Flora of Pakistan Vol. 206: 147 in eFloras.org, Missouri Botanical Garden. Accessed Nov 12, 2008.
source
Flora of Pakistan @ eFloras.org
editor
S. I. Ali & M. Qaiser
project
eFloras.org
original
visit source
partner site
eFloras

Distribution

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Pantropical.
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Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
bibliographic citation
Annotated Checklist of the Flowering Plants of Nepal Vol. 0 in eFloras.org, Missouri Botanical Garden. Accessed Nov 12, 2008.
source
Annotated Checklist of the Flowering Plants of Nepal @ eFloras.org
author
K.K. Shrestha, J.R. Press and D.A. Sutton
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eFloras.org
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Distribution

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Ala., Fla., Ga., S.C.; Mexico; Central America; South America.
license
cc-by-nc-sa-3.0
copyright
Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
bibliographic citation
Flora of North America Vol. 23: 143, 156, 158 in eFloras.org, Missouri Botanical Garden. Accessed Nov 12, 2008.
source
Flora of North America @ eFloras.org
editor
Flora of North America Editorial Committee
project
eFloras.org
original
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eFloras

Distribution

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Distribution: Pantropical; Africa S of Sahara to Namibia and Mozambique, Madagascar, India, Pakistan, China, Taiwan, Malaysia, Australia, S and N America.
license
cc-by-nc-sa-3.0
copyright
Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
bibliographic citation
Flora of Pakistan Vol. 206: 147 in eFloras.org, Missouri Botanical Garden. Accessed Nov 12, 2008.
source
Flora of Pakistan @ eFloras.org
editor
S. I. Ali & M. Qaiser
project
eFloras.org
original
visit source
partner site
eFloras

Elevation Range

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1000-1700 m
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cc-by-nc-sa-3.0
copyright
Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
bibliographic citation
Annotated Checklist of the Flowering Plants of Nepal Vol. 0 in eFloras.org, Missouri Botanical Garden. Accessed Nov 12, 2008.
source
Annotated Checklist of the Flowering Plants of Nepal @ eFloras.org
author
K.K. Shrestha, J.R. Press and D.A. Sutton
project
eFloras.org
original
visit source
partner site
eFloras

Flower/Fruit

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Fl. Per.: Oct.-December (Bhandari, l.c. 333. 1990).
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cc-by-nc-sa-3.0
copyright
Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
bibliographic citation
Flora of Pakistan Vol. 206: 147 in eFloras.org, Missouri Botanical Garden. Accessed Nov 12, 2008.
source
Flora of Pakistan @ eFloras.org
editor
S. I. Ali & M. Qaiser
project
eFloras.org
original
visit source
partner site
eFloras

Flowering/Fruiting

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Fruiting summer.
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cc-by-nc-sa-3.0
copyright
Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
bibliographic citation
Flora of North America Vol. 23: 143, 156, 158 in eFloras.org, Missouri Botanical Garden. Accessed Nov 12, 2008.
source
Flora of North America @ eFloras.org
editor
Flora of North America Editorial Committee
project
eFloras.org
original
visit source
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eFloras

Habitat

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Damp, disturbed soils; 0–300m.
license
cc-by-nc-sa-3.0
copyright
Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
bibliographic citation
Flora of North America Vol. 23: 143, 156, 158 in eFloras.org, Missouri Botanical Garden. Accessed Nov 12, 2008.
source
Flora of North America @ eFloras.org
editor
Flora of North America Editorial Committee
project
eFloras.org
original
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eFloras

Habitat

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Open moist sites, river beds, rice fields.
license
cc-by-nc-sa-3.0
copyright
Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
bibliographic citation
Flora of Pakistan Vol. 206: 147 in eFloras.org, Missouri Botanical Garden. Accessed Nov 12, 2008.
source
Flora of Pakistan @ eFloras.org
editor
S. I. Ali & M. Qaiser
project
eFloras.org
original
visit source
partner site
eFloras

Cyperus cuspidatus

provided by wikipedia EN

Cyperus cuspidatus, commonly known as the coastal plain flatsedge,[2] is a sedge of the family Cyperaceae that is native to seasonally dry tropical areas of Africa, Asia, the Americas and Australia.[3][4]

Description

The annual sedge typically grows to a height of 2.5 to 15 centimetres (0.98 to 5.91 in) and has a tufted habit. In Australia it blooms between February and August producing green-yellow-brown flowers.[4] The plant has a slender root system. The glabrous culms are tufted and have a triangular cross-section with length of 1 to 17 cm (0.39 to 6.69 in) and a width of 0.2 to 0.5 mm (0.0079 to 0.0197 in). It has linear shaped leaf blades that can be flat or rolled that taper to a pointed end. The leaves are 1 to 13.5 cm (0.39 to 5.31 in) in length and have a width of 0.2 to 1.1 cm (0.079 to 0.433 in). the leaves are accompanied by red-brown to purple coloured sheaths of a similar length and width.[5]

Taxonomy

The species was described by the botanist Carl Sigismund Kunth in 1816 as a part of the work Nova genera et species plantarum authored by Kunth, Aimé Bonpland and Alexander von Humboldt. It has a total of 18 synonyms including; Cyperus angustifolius, Cyperus gratus, Cyperus recurvus, Cyperus waterlotii and Dichostylis cuspidata.[3] The type specimen was collected by von Humboldt and Bonpland in Venezuela in 1800.[6]

Distribution

In Australia it is found in Queensland, the Northern Territory and it is found along creeks, streams and rivers in the Kimberley region of Western Australia where it grows in stony red sand-loam soils over sandstone.[4] In Asia it is found from Pakistan in the west to China in the east and extends down into Malesia. It is found in southern parts of North America extending through Central America and in northern parts of South America.[3]

See also

References

  1. ^ "NatureServe Explorer 2.0". explorer.natureserve.org. Retrieved 13 November 2022.
  2. ^ "Cyperus cuspidatus". Integrated Taxonomic Information System. Retrieved 25 April 2022.
  3. ^ a b c "Cyperus cuspidatus Kunth". Kew Science – Plants of the World Online. Retrieved 27 August 2022.
  4. ^ a b c "Cyperus cuspidatus". FloraBase. Western Australian Government Department of Biodiversity, Conservation and Attractions.
  5. ^ "General Information Cyperus cuspidatus Kunth". Kew Science – Plants of the World Online. Retrieved 27 August 2022.
  6. ^ "Cyperus cuspidatus Kunth". Tropicos. Missouri Botanical Garden. 2022. Retrieved 27 August 2022.
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Wikipedia authors and editors
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wikipedia EN

Cyperus cuspidatus: Brief Summary

provided by wikipedia EN

Cyperus cuspidatus, commonly known as the coastal plain flatsedge, is a sedge of the family Cyperaceae that is native to seasonally dry tropical areas of Africa, Asia, the Americas and Australia.

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Wikipedia authors and editors
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wikipedia EN