Cyperus nutans Vahl

Species

Angiosperms > Poales > Cyperaceae > Cyperus

Characteristics

Perennials. Rhizomes short, hardened. Culms scattered, 75-110 cm tall, stout, compressed 3-angled, smooth, with leaves at basal part. Leaves shorter than culm; leaf blade 6-12 mm wide, flat, margin scabrous. Involucral bracts 4-8, leaflike, basal 3 or 4 usually longer than inflorescence, to 1.2 cm wide, abaxially serrulate apically on 2 lateral veins, margin scabrous. Inflorescence a compound anthela; rays 8-10, to 16 cm, each with 4-10 raylets. Spikes cylindric, 2-5 cm × 4-7 mm, with laxly arranged spikelets. Spikelets linear to narrowly linear-ovoid, 5-11 × ca. 1.5 mm, suberect, 6-10-flowered; rachilla flexuose, wings white and hyaline. Glumes yellowish on both surfaces and rusty brown striate, lax, elliptic, ca. 2 mm, spreading after anthesis, membranous, 7-9-veined, keel reddish brown, apex mucronate. Stamens 3; anthers linear-oblong; connective prominent beyond anthers. Style very short; stigmas 3, slender, exserted. Nutlet dark brown when mature, oblong to obovoid-oblong, ca. 2/3 as long as subtending glume, 3-sided, densely and slightly prominently punctate. Fl. and fr. May-Oct. 2n = 56.
Life form perennial
Growth form herb
Growth support free-standing
Foliage retention deciduous
Sexuality hermaphrodite
Pollination -
Spread -
Mature width (meter) -
Mature height (meter) 0.8 - 0.98
Root system rhizome
Rooting depth (meter) -
Root diameter (meter) -
Flower color -
Blooming months -
Fruit color -
Fruiting months
JanFebMar
AprMayJun
JulAugSep
OctNovDec
Nitrogen fixer -
Photosynthetic pathway -

Environment

Swamps, wet open places, and wet forest. Sparse forests, grasslands on mountain slopes, water margins in valleys, wet places, river margins, fields; at elevations from 100-1,600 metres.
Light -
Soil humidity -
Soil texture -
Soil acidity -
Soil nutriment -
Hardiness (USDA) 8-12

Usage

Uses medicinal
Edible stems
Therapeutic use -
Human toxicity -
Animal toxicity -

Cultivation

Can be grown by seedlings.
Mode seedlings
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 nutans world distribution map, present in Afghanistan, Angola, Bangladesh, China, Eritrea, Ethiopia, Indonesia, Kenya, Lao People's Democratic Republic, Myanmar, Mozambique, Mauritius, Nigeria, Nepal, Oman, Pakistan, Philippines, Palau, Sudan, Thailand, Taiwan, Province of China, Tanzania, United Republic of, Uganda, Viet Nam, and Yemen

Conservation status

Cyperus nutans threat status: Least Concern

Identifiers

LSID urn:lsid:ipni.org:names:305339-1
WFO ID wfo-0000378418
COL ID 33CYF
BDTFX ID -
INPN ID -
Wikipedia (EN) Link
Wikipedia (FR)

Synonyms

Chlorocyperus jacquinii Cyperus nutans

Lower taxons

Cyperus nutans var. eleusinoides Cyperus nutans var. nutans Cyperus nutans var. subprolixus