Cyperus dentatus Torr.

Dentate umbrella sedge (en), Souchet denté (fr)

Species

Angiosperms > Poales > Cyperaceae > Cyperus

Characteristics

Herbs, perennial, cespitose, rhizomatous; stolons tuberiferous, 1–10 cm. Culms trigonous, 8–50 cm × 1–3 mm. Leaves flat or V-shaped, 10–40 cm × 2–5 mm. Inflorescences: heads digitate, 8–18 mm diam.; rays 4–9, 1–8 cm; 2d order rays 0.5–2 cm; bracts 3–5, ± horizontal, flat, 1–20 cm × 1–4 mm. Spikelets commonly proliferous, 2–6, linear to oblong, compressed, 3–24 × 2–2.5 mm; floral scales 3–20(–50), reddish brown, laterally 1–3-ribbed, ovate, 2–2.5 × 1.5–2 mm. Flowers: stamens 3; anthers 1.5 mm; styles 1 mm; stigmas 1.5 mm. Achenes reddish brown, sessile, obovoid, 0.8–1 × 0.4–0.5 mm, apex obtuse, scarcely apiculate, surfaces glabrous.
More
Perennial from short rhizomes ending in tubers; stems solitary, 1–5 dm; lvs numerous, 2–5 mm wide, about equaling the stem; bracts 3–5, the longer surpassing the infl; rays numerous, 1–5(–10) cm, often branched above; spikes short, loosely hemispheric, 1–3 cm wide; spikelets few to many, flattened, 3–15 mm, with 8–25 fls; some spikelets usually proliferated, bearing much elongate scales; scales normally ovate, 2–3 mm, the midvein prolonged as a short stout point; rachilla wingless; achenes obovoid trigonous, 1 mm or less, half as thick; 2n=34. Sandy shores; Que. and N.S. to n. N.Y., s. to W.Va. and N.C.; nw. Ind.
Life form perennial
Growth form herb
Growth support free-standing
Foliage retention deciduous
Sexuality hermaphrodite
Pollination -
Spread -
Mature width (meter) -
Mature height (meter) 0.06 - 0.3
Root system fibrous-root rhizome
Rooting depth (meter) -
Root diameter (meter) -
Flower color -
Blooming months
JanFebMar
AprMayJun
JulAugSep
OctNovDec
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) 4-9

Usage

Uses -
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 -

Distribution

Cyperus dentatus world distribution map, present in Åland Islands, Canada, Georgia, Malaysia, Nicaragua, and United States of America

Conservation status

Cyperus dentatus threat status: Least Concern

Identifiers

LSID urn:lsid:ipni.org:names:30228939-2
WFO ID wfo-0000371390
COL ID 33C2S
BDTFX ID -
INPN ID -
Wikipedia (EN) Link
Wikipedia (FR)

Synonyms

Cyperus dentatus f. ctenostachys Cyperus dentatus Cyperus watsonianus Cyperus micranthus Cyperus parviflorus Cyperus dentatus var. ctenostachys Cyperus dentatus f. dentatus