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Fox Tail Flat Sedge

Cyperus alopecuroides Rottb.

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provided by eFloras
Cyperus alopecuroides has been introduced in Polk County, Florida.

Plants of Cyperus alopecuroides might be confused with C. digitatus; large size and the biconvex achenes with two stigmas characterize C. alopecuroides.

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Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
bibliographic citation
Flora of North America Vol. 23: 142, 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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Description

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Herbs, perennial, rhizomatous, coarse. Culms trigonous, 150–250 cm × 2–15 mm, glabrous. Leaves inversely W-shaped, 30–150 cm × 6–22 mm. Inflorescences: spikes 1–4, cylindric, 1.5–4 cm × 7–15 mm; rays 3–9, 10–26 cm; 2d order rays 2–11 cm; 3d order rays 1–4 cm (or absent); bracts 3–5, ± horizontal, 20–100 cm × 3–15 mm; 2d order bracts 2–7 cm × 2–7 mm; 3d order bracts 2–5 cm × 2–4 mm (or absent); rachilla persistent, wingless or wing hyaline, narrow, 0.1 mm wide. Spikelets 50–100, linear, ± quadrangular, slightly compressed, 8–11 × 0.9–1.2 mm; floral scales 15–30, marginally clear, laterally reddish along midrib, medially green, laterally 3–4 ribbed, medially 3–5-ribbed, ovate, 1–2–1.6 × 1.1–1.3 mm, apex mucronulate. Flowers: anthers 2, 0.4–0.5 mm; styles 0.8–1 mm; stigmas 2, 0.4 mm. Achenes dark brown, sessile, ellipsoid to obovoid, 0.9 × 0.4–0.5 mm, surfaces finely puncticulate.
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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: 142, 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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Description

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Caespitose (perennial?), 70-120 cm. Rhizome 0(?). Roots glabrous. Stem 5-7 mm diam., trigonous, green, smooth. Leaves up to as long as stem, stiff below, curved and somewhat flexuous above; sheaths 5-20 cm, brown or greyish, rather soft; blades to c. 15 mm wide, base turgid, somewhat keeled, margins smooth, margins and main nerves towards apex scabrous above, apex long tapering, trigonous, scabrous. Inflorescence a compound anthelodium, to 35 cm; bracts 5-7, foliose, 2-4 longer than inflorescence, to more than 50 cm; primary branches 5-15, to 30 cm, most of them rebranching, secondary anthelodia to 12 cm, longest secondary branches sometimes with small tertiary anthelodium, tubular prophyll to 35 mm, with small leaf blade, to 15 mm; cluster of spikes of 25-c.50 tightly spirally arranged spikes. Spikes c. 5 mm x 3 mm, ovoid, flat, spreading, flat side upwards, glume-like bract c. 2.5 mm, acute, glume-like prophyll bi-nerved, clasping, c. 1 mm; rachis flat, c. 0.3 mm wide, quadrangular, narrowly winged, internodes c. 0.5 mm; glumes 2-2.5 mm, cymbiform, blunt or mucronate, sides with raised nerves, yellowish or grey, with reddish-brown stripes, margins yellowish or pale, scarious. Stamens 2; stigmas 2 or 3. Nut c. 0.5 mm, yellowish brown, bi-convex, slightly flattened, finely reticulate or almost smooth, shiny.
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Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
bibliographic citation
Flora of Pakistan Vol. 206: 99 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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introduced; Fla.; West Indies; Asia; Africa; Australia.
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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: 142, 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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Distribution

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Distribution: In N. and tropical Africa, Madagascar, Macaronesia; West Indies, Guadeloupe; Pakistan, India, Malaysia, NE Australia.
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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: 99 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

Flower/Fruit

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Fl. Per.: April, September. According to Bhandari, Fl. Indian Desert (1990) flowering and fruiting from Oct. to March.
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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 Pakistan Vol. 206: 99 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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eFloras

Flowering/Fruiting

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Fruiting summer.
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copyright
Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
bibliographic citation
Flora of North America Vol. 23: 142, 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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Pond shores, stream banks; 0–30m.
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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: 142, 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
project
eFloras.org
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eFloras

Habitat

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Swamps, alluvial areas.
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: 99 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

Synonym

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Juncellus alopecuroides (Rottb.) C.B. Clarke, Fl. Brit. Ind. 6: 595. 1893; Rottb., Descr. & Icon.: t. VIII, fig. 2. 1773. Täckholm, Stud. Fl. Egypt: Pl. 292. 1974. Haines & Lye, Sedges and Rushes E. Afr.: fig. 384. 1983.
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: 99 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 alopecuroides

provided by wikipedia EN

Cyperus alopecuroides, commonly known as the foxtail flatsedge,[2] is a sedge of the family Cyperaceae that is native to parts of Africa, Asia and Australia.[3]

Description

The perennial and rhizomatous sedge typically grows to a height of 1 to 1.5 metres (3.3 to 4.9 ft). It has few glabrous culms that have triangular cross section. The culms are 22 to 140 cm (8.7 to 55.1 in) in length and have a width of 3.5 to 8.4 mm (0.14 to 0.33 in). The green leaves are crowded ad the base of the plant and can be up to 100 cm (39 in) in length. The leaves have reddish-brown to blackish coloured sheaths that are 7 to 31 cm (2.8 to 12.2 in) in length. The linear shaped leaf blades are flat or W-shaped and taper to a slender point with a length of 37 to 75 cm (15 to 30 in) and a width of 4 to 15 mm (0.16 to 0.59 in).[3]In Australia, the plant blooms between May and July producing yellow-brown flowers.[4]

Taxonomy

The species was first described in 1773 by the botanist Christen Friis Rottbøll in the work Descriptionum et Iconum Rariores. There are nine synonyms including; Chlorocyperus alopecuroides, Cyperus bidentatus, Cyperus glomeratus, Juncellus alopecuroides and Juncellus pallidiflorus.[3]

Distribution

The plant is found in parts of Africa from Egypt to Eswatini in parts of Asia including Yemen, Saudi Arabia, Pakistanm and India. It is also found in parts of northern Australia. It is often situated in seasonally wet grasslands, swamps, and old cultivations ranging from sea level to an altitude of 1,800 m (5,900 ft).[3] In Western Australia, it is found around lakes and swamps in the eastern Kimberley region extending across northern parts of the Northern Territory and Queensland.[4]

See also

References

  1. ^ Lansdown, R.V., Beentje, H.J., Daoud-Bouattour, A., Ghrabi-Gammar, Z., Muller, S., Ben Saad, S. & Mahamane, A. (2018). "Foxtail Sedge Cyperus alopecuroides". IUCN Red List of Threatened Species. 2018: e.T164443A120147992. doi:10.2305/IUCN.UK.2018-2.RLTS.T164443A120147992.en. Retrieved 21 April 2022.{{cite journal}}: CS1 maint: multiple names: authors list (link)
  2. ^ "Cyperus alopecuroides". Integrated Taxonomic Information System. Retrieved 21 April 2022.
  3. ^ a b c d "Cyperus alopecuroides Rottb". Kew Science – Plants of the World Online. Retrieved 12 August 2022.
  4. ^ a b "Cyperus alopecuroides". FloraBase. Western Australian Government Department of Biodiversity, Conservation and Attractions.
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Cyperus alopecuroides: Brief Summary

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Cyperus alopecuroides, commonly known as the foxtail flatsedge, is a sedge of the family Cyperaceae that is native to parts of Africa, Asia and Australia.

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Wikipedia authors and editors
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