Cyperus glomeratus L.

Souchet aggloméré (fr)

Species

Angiosperms > Poales > Cyperaceae > Cyperus

Characteristics

Annuals. Roots fibrous. Culms scattered, 30-60(-90) cm tall, stout, obtusely 3-angled, smooth, basally with leaves, base slightly swollen. Leaves few, shorter to slightly longer than culm; sheath reddish brown, long; leaf blade 4-8 mm wide, margin smooth. Involucral bracts 3 or 4, leaflike, longer than inflorescence. Inflorescence a compound anthela; rays 3-8, mostly to 12 cm, unequal in length; raylets lacking. Spikes subglobose, ellipsoid, or oblong, 1-3 × 0.6-1.7 cm, not pedunculate, with very many spikelets. Spikelets very densely arranged in several rows, narrowly linear-ovoid to linear, 5-10 × 1.5-2 mm, slightly compressed, 8-16-flowered; rachilla wings white, narrow, hyaline. Glumes reddish brown, lax, suboblong to oblong-lanceolate, ca. 2 mm, slightly spreading, veins very obscure, not keeled, margin involute, apex obtuse. Stamens 3; anthers short, oblong; connective prominent beyond anthers. Style slightly long; stigmas 3, ± short. Nutlet dark gray, narrowly oblong, ca. 1/2 as long as subtending glume, 3-sided, conspicuously reticulately striate. Fl. and fr. Jun-Oct.
Life form
Growth form herb
Growth support free-standing
Foliage retention deciduous
Sexuality
Pollination anemogamy
Spread barochory
Mature width (meter) -
Mature height (meter) 0.3 - 0.6
Root system fibrous-root rhizome
Rooting depth (meter) -
Root diameter (meter) -
Flower color -
Blooming months
JanFebMar
AprMayJun
JulAugSep
OctNovDec
Fruit color -
Fruiting months
JanFebMar
AprMayJun
JulAugSep
OctNovDec
Nitrogen fixer -
Photosynthetic pathway c4

Environment

On the margins of lakes and rivers, sandy soils at water margins, in seasonally inundated grassland and in rice fields; at elevations from 100-1,300 metres.
Light 4-9
Soil humidity 7-9
Soil texture 1-4
Soil acidity -
Soil nutriment -
Hardiness (USDA) 5-10

Usage

Uses essential oil medicinal
Edible -
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 -

Images

Flower

Cyperus glomeratus flower picture by Claudio Lombardo (cc-by-sa)
Cyperus glomeratus flower picture by Liam Guo (cc-by-sa)
Cyperus glomeratus flower picture by Klaus Klaus (cc-by-sa)

Distribution

Cyperus glomeratus world distribution map, present in Austria, Bulgaria, Switzerland, Chile, China, Czech Republic, Spain, France, Greece, Hungary, Iran (Islamic Republic of), Italy, Japan, Kazakhstan, Pakistan, Korea (Democratic People's Republic of), Romania, Russian Federation, Turks and Caicos Islands, Turkmenistan, Ukraine, and Uzbekistan

Conservation status

Cyperus glomeratus threat status: Least Concern

Identifiers

LSID urn:lsid:ipni.org:names:304626-1
WFO ID wfo-0000374132
COL ID 33CBH
BDTFX ID 20754
INPN ID 93938
Wikipedia (EN) Link
Wikipedia (FR)

Synonyms

Chlorocyperus glomeratus Cyperus aureus Cyperus glomeratus Cyperus cinnamomeus Cyperus granulatus Cyperus multumbelliferus Cyperus semiradiciflorus Pycreus glomeratus Chlorocyperus glomeratus f. stenostachys Cyperus sparsiflorus Cyperus glomeratus var. semiradiciflorus Cyperus glomeratus f. stenostachys Cyperus australis