Cyperus hermaphroditus Standl.

Hermaphrodite flatsedge (en)

Species

Angiosperms > Poales > Cyperaceae > Cyperus

Characteristics

Herbs, perennial, rhizomatous. Culms trigonous, (10–)30–80(–140) cm × (0.4–)1–3(–5) mm, glabrous. Leaves V-shaped or flanged V-shaped, (5–)15–70(–90) cm × (2–)4–10(–13) mm, glabrous. Inflorescences: spikes 1(–5), rather densely ovoid or oblong-cylindric, (10–)25–45(–62) × 7–22 mm, 11–21 spikelets per 5 mm of rachis; rays (3–)5–10(–17), (1–)5–12(–24) cm; bracts (2–)4–8, ascending at 30–45°, V-or inversely W-shaped, (2–)8–40(–65) cm × (1–)2–8 mm; rachilla deciduous, wings 0.4–0.5 mm wide. Spikelets (10–)50–150, oblong to linear, quadrangular, (3–)4–8(–18) × (0.8–)1–1.2(–1.6) mm; distal spikelet spreading or ascending; floral scales (1–) 3–8, pale greenish white to golden brown, deep brown, or reddish brown, medially usually green, weakly to strongly 3(–4)-ribbed laterally, 1–3-ribbed medially, ovate to elliptic, (2–)2.6–3.2(–4) × 1.2–2 mm, apex obtuse. Flowers: anthers (0.4–)0.6–1 mm; styles 0.4–1.6 mm; stigmas 1–1.5 mm. Achenes brown or reddish brown, sessile or nearly so, ellipsoid, 1.4–1.8(–2) × 0.6–0.8(–1) mm, apex acute to obtuse, slightly apiculate, surfaces puncticulate.
More
Plants perennial, with short rhizomes, the culms mostly stout with a thickened reddish base, 15-60 cm. high; leaves 4-8 mm. wide; bracts long and leaf-like; spikes loose, capitate, or on rays to 10 cm. long; spikelets green or yellow, divari-cate, quadrangular, 5-10 mm. long, 2-to 7-flowered, the scales obtuse; achene oblong-elliptic, 2 mm. long, trigonous, with the axial face concave, reddish to dull brown, papillose.
Life form perennial
Growth form herb
Growth support free-standing
Foliage retention deciduous
Sexuality hermaphrodite
Pollination -
Spread -
Mature width (meter) -
Mature height (meter) 0.23 - 0.7
Root system rhizome
Rooting depth (meter) -
Root diameter (meter) -
Flower color -
Blooming months -
Fruit color -
Fruiting months -
Nitrogen fixer -
Photosynthetic pathway -

Environment

Light 4-9
Soil humidity 7-9
Soil texture 1-2
Soil acidity -
Soil nutriment -
Hardiness (USDA) 9-12

Usage

Uses animal food medicinal
Edible -
Therapeutic use -
Human toxicity -
Animal toxicity -

Cultivation

Mode -
Germination duration (days) 25 - 30
Germination temperacture (C°) 21 - 23
Germination luminosity -
Germination treatment -
Minimum temperature (C°) -
Optimum temperature (C°) -
Size -
Vigor -
Productivity -

Images

Flower

Cyperus hermaphroditus flower picture by Trap Hers (cc-by-sa)

Distribution

Cyperus hermaphroditus world distribution map, present in Belize, Bolivia (Plurinational State of), Brazil, Costa Rica, Cuba, Dominica, Ecuador, Guatemala, Guyana, Honduras, Jamaica, Nicaragua, Panama, Peru, United States of America, and Venezuela (Bolivarian Republic of)

Identifiers

LSID urn:lsid:ipni.org:names:74768-2
WFO ID wfo-0000374521
COL ID 6C84B
BDTFX ID -
INPN ID 632962
Wikipedia (EN) Link
Wikipedia (FR)

Synonyms

Cyperus hermaphroditus Cyperus longispicatus Cyperus ruizianus Cyperus sertularinus Cyperus tetragonus Kyllinga incompleta Mariscus conflexus Mariscus hermaphroditus Mariscus jacquinii Mariscus longiradiatus Mariscus patulus Mariscus tovarii Cyperus alpinus Cyperus subambiguus Eleocharis cyperina Mariscus alpinus Mariscus sertularinus Carex hermaphrodita Cyperus incompletus Cyperus incompletus Carex ruizianus Cyperus tonduzii Cyperus randuzii Cyperus longespicatus Mariscus ambiguus Cyperus hermaphroditus var. condensatus Cyperus hermaphroditus var. longiradiatus Cyperus hermaphroditus var. longespicatus Mariscus jacquinii var. angustior Mariscus jacquinii subsp. angustior Cyperus hermaphroditus var. angustior Cyperus randuzii var. tenuis Cyperus tonduzii var. tenuis Cyperus hermaphroditus var. hermaphroditus Kobresia cyperina