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Finger Flat Sedge

Cyperus digitatus Roxb.

Distribution in Egypt

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Nile region.

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Global Distribution

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Egypt, tropical Africa, Madagascar, Seychelles, Afghanistan, India, Sri Lanka, Myanmar, China, east Indies, Philippines, central and south America.

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Habitat

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Nile banks.

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Life Expectancy

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Perennial.

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Life Expectancy

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Perennial.

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Description

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Herbs, perennial, rhizomatous, coarse. Culms trigonous, 50–150 cm × 2–15 mm, glabrous (rarely sparsely scabridulous on angles proximal to bracts). Leaves inversely W-shaped, 40–100 cm × 5–15 mm. Inflorescences: spikes 1–4, cylindric, (2.5–)3.5–5 × 1.2–1.5 cm; rays 8–10, (1–)15–35 cm; 2d order rays 1–3 cm; bracts 8–12, ascending at 45–60°, (5–)20–80 cm × 3–15 mm; 2d order bracts 3–7 cm × 2–4 mm; rachilla persistent, wings 0.3 mm wide, at achene maturation adaxial edge of wing detaching from rachilla, base remaining firmly attached. Spikelets 35–65, slightly compressed, linear, ± quadrangular, 5–8 × 0.8–1.1 mm; floral scales deciduous, 12–16, appressed, marginally clear, laterally reddish along midrib, medially green, laterally 1–2-ribbed, medially strongly 5-ribbed, ovate, 1.6–1.8 × 1.1–1.3 mm, apex mucronulate. Flowers: anthers 0.4–0.5 mm, connective blunt, at most 0.1 mm; styles 0.8–1 mm; stigmas 0.4 mm. Achenes brown or whitish, sessile, ellipsoid, slightly wider at base, 0.9 × 0.4 mm, surfaces finely puncticulate.
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Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
bibliographic citation
Flora of North America Vol. 23: 147, 171, 173, 174 in eFloras.org, Missouri Botanical Garden. Accessed Nov 12, 2008.
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Flora of North America @ eFloras.org
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Flora of North America Editorial Committee
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Description

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Perennial, 60-150 cm. Rhizome short, horizontal, covered by brown or dark-brown scales. Stem 2-8 mm diam., trigonous, edges obtuse below, smooth, sides in upper part often concave. Leaves basal, shorter than stem; sheaths up to 20 cm, yellowish or brown, soft, one side scarious, mouth margin concave; blades 50 cm or longer, 6-12 mm wide, flat or folded, keeled, margins narrowly revolute, smooth or distally scabrous, apex long-attenuate, trigonous, scabrous. Inflorescence a compound anthelodium, 10-25 cm; bracts, 6-9 lowermost leaf-like, longest more than 50 cm; primary branches mostly 6-9, to 15 cm, with tubular prophyll up to 20 mm; secondary anthelodia 4-10 cm; cluster of spikes 30-50 mm long, with 30-60 spikes; spikes spirally arranged, reflexed, 7-13 x c. 2 mm, glume-like bract 1.5-2 mm, acute, glume-like prophyll 1.6-2 mm, binerved; rachis rigid, flat, reddish brown, internodes c. 1 mm; glumes 2.5-2.8 mm, acute, midnerve area green, sides with 2-3 conspicuous veins and often with reddish-brown zone, margins widely scarious, basal edges extending down to next node. Nut 1.3-1.5 x 0.4-0.5 mm, ovoid, trigonous, grey-brown, very finely reticulate.
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Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
bibliographic citation
Flora of Pakistan Vol. 206: 95 in eFloras.org, Missouri Botanical Garden. Accessed Nov 12, 2008.
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Flora of Pakistan @ eFloras.org
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S. I. Ali & M. Qaiser
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eFloras.org
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Distribution

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Tropical and subtropical regions of both hemispheres.
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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.
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Annotated Checklist of the Flowering Plants of Nepal @ eFloras.org
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K.K. Shrestha, J.R. Press and D.A. Sutton
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Distribution

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Fla., Tex.; Mexico; Central America; South America; Asia; Africa.
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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: 147, 171, 173, 174 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

Distribution

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Distribution: Pantropical; in SE Asia from Pakistan, India and Sri Lanka to S. China, Philippines, Malaysia and SE Australia.
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Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
bibliographic citation
Flora of Pakistan Vol. 206: 95 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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visit source
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eFloras

Elevation Range

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1100 m
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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
original
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eFloras

Flower/Fruit

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Fl. Per.: July-August.
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Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
bibliographic citation
Flora of Pakistan Vol. 206: 95 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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visit source
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eFloras

Flowering/Fruiting

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Fruiting summer.
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Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
bibliographic citation
Flora of North America Vol. 23: 147, 171, 173, 174 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

Habitat

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Wet pastures, stream banks; 0–100m.
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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: 147, 171, 173, 174 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

Habitat

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Open wet places, swamps, 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: 95 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
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eFloras

Cyperus digitatus

provided by wikipedia EN

Cyperus digitatus, also known as finger flatsedge in the United States,[2] and chang xiao sui suo cao in China,[3] is a sedge of the family Cyperaceae that is native to tropical and subtropical areas of Africa, Asia, the Americas and Australia.[4][5]

Description

The grass like sedge typically grows to a height of 1 metre (3.3 ft).[5] The perennial sedge has short woody rhizomes and tufted smooth culms with a triangular cross-section that grow to a height of 0.5 to 1.5 m (1 ft 8 in to 4 ft 11 in). The leaves below are nearly the same length as the culms and have brown to purple coloured sheaths. The sub-leathery, flat to folded leaf blade has a width of 4 to 15 mm (0.16 to 0.59 in). It form as inflorescence with six to ten rays that have a length up to 18 cm (7.1 in) and have four to seven raylets that have cylindrical spikes that are 3 to 6 cm (1.2 to 2.4 in) long and 0.2 to 2 cm (0.079 to 0.787 in) wide.[6]

Taxonomy

The species was first described by the botanist William Roxburgh in 1820 as a part of the work Flora Indica; or descriptions of Indian Plants. The type specimen was collected by Roxburgh in India.[3] It has ten synonyms including; Cyperus bourgaei, Cyperus digitatus var. laxiflorus, Cyperus digitatus var. pingbienensis and Cyperus mexicanus.[3]

Distribution

In Asia the renge of the plant extends from Pakistan in the west to the eastern sea board of China in the east and extends doen through most of Malesia. In Australia is found in creek beds and other damp areas in a small area in the Kimberley region of Western Australia[5] as well as other northern tropical parts of the Northern Territory and Queensland. In the Americas it is found as far north as Texas with the range extending south through Central America and into South America as far south as Argentina. In Africa it is found as far north as Egypt south through the rest of the continent to Botswana.[4]

See also

References

  1. ^ Mesterházy, A.; Kumar, B. (2020). "Cyperus digitatus". IUCN Red List of Threatened Species. 2020: e.T164510A136667466. doi:10.2305/IUCN.UK.2020-2.RLTS.T164510A136667466.en. Retrieved 13 November 2022.
  2. ^ Wunderlin, R. P., B. F. Hansen, A. R. Franck, and F. B. Essig (2022). "Cyperus digitatus". Atlas of Florida Plants. University of South Florida. Retrieved 28 August 2022.{{cite web}}: CS1 maint: multiple names: authors list (link)
  3. ^ a b c "Cyperus digitatus Roxb". Tropicos. Missouri Botanical Garden. 2022. Retrieved 28 August 2022.
  4. ^ a b "Cyperus digitatus Roxb". Kew Science – Plants of the World Online. Retrieved 27 August 2022.
  5. ^ a b c "Cyperus digitatus". FloraBase. Western Australian Government Department of Biodiversity, Conservation and Attractions.
  6. ^ "Cyperus digitatus Roxb". [he World Flora Online. Retrieved 28 August 2022.
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Cyperus digitatus: Brief Summary

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Cyperus digitatus, also known as finger flatsedge in the United States, and chang xiao sui suo cao in China, is a sedge of the family Cyperaceae that is native to tropical and subtropical areas of Africa, Asia, the Americas and Australia.

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