Eragrostis amabilis (L.) Wight & Arn.

Species

Angiosperms > Poales > Poaceae > Eragrostis

Characteristics

Tufted annuals. Culms erect or ascending, (6–) 9–25 (–60) cm high. Leaves often pilose; ligule a fringe of hairs, 0.2–0.3 mm long; blade flat or loosely involute to folded, to 9 cm long, to 3.5 mm wide, ±stiff. Panicles open, 3.5–14 cm long, 0.8–5.5 cm wide, scaberulous; axils sometimes pilose; branches simple or divided, filiform, sometimes sparsely glandular, naked near axil. Spikelets pedicellate, terminated by vestigial floret or naked rachilla internode, oblong to ovate, compressed, 1–2.3 mm long, 1–2.5 mm wide; rachilla flexuose, slender; florets 4–7, loosely overlapping. Glumes deciduous, unequal, ovate, ±hyaline, often with keel green; lower glume 0.5–0.6 mm long; upper glume 0.7–1 long. Lemma ovate-oblong, 0.7–1 mm long, obtuse, sometimes mucronulate, membranous; lateral nerves ribbed, often green; lower lemmas sometimes falling separately. Palea membranous; body spathulate; keels stiffly ciliate; flaps almost as wide as body. Stamens 3; anthers c. 0.2 mm long. Grain not compressed, narrowly ovoid or ellipsoid, c. 0.5 mm long, ±acute at apex and base, glossy, dark reddish brown.
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Annual; culms slender, erect or geniculate-spreading, 10-40 cm. high; blades flat, 4-10 cm. long, 2-4 mm. wide, acuminate, glabrous; sheaths glabrous, with a promi-nent tuft of hairs at the throat; panicles oblong, 3-12 cm. long, 1.5-3 cm. wide, the short branches stiffly ascend-ing or spreading, 1-2.5 cm. long; spikelets mostly 1.5-2 mm. long, 4-to 6-flowered; lemmas 1 mm. long, obtuse, the palea conspicuously ciliate, the hairs about 0.3 mm. long.
A delicate annual grass. It forms tufts. It grows 30-60 cm high. The leaf blades are flat and 2-10 cm long by 0.5 cm wide. The seeds are oval and red and 0.5 mm across.
Life form annual
Growth form herb
Growth support free-standing
Foliage retention deciduous
Sexuality hermaphrodite
Pollination -
Spread -
Mature width (meter) -
Mature height (meter) 0.2 - 0.38
Root system -
Rooting depth (meter) -
Root diameter (meter) -
Flower color -
Blooming months
JanFebMar
AprMayJun
JulAugSep
OctNovDec
Fruit color -
Fruiting months -
Nitrogen fixer -
Photosynthetic pathway c4

Environment

In sand on river banks, lake-shores and coastal dunes; also in Kalahari Sand and as a weed of disturbed ground and cultivation, at elevations up to 1,160 metres.
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A troublesome weed of gardens, lawns androadsides; usually in sandy soils but also in beach sands, woodland clearingsand shallow soils over laterite. 
It is a tropical plant. It grows along roadsides and on cultivated land across Africa and in Asia. It grows in savannah woodland. In Yunnan.
Light 7-9
Soil humidity 1-3
Soil texture 3-4
Soil acidity -
Soil nutriment -
Hardiness (USDA) 9-11

Usage

Uses -
Edible seeds
Therapeutic use -
Human toxicity -
Animal toxicity -

Cultivation

Can be grown by seedlings.
Mode seedlings
Germination duration (days) -
Germination temperacture (C°) -
Germination luminosity -
Germination treatment -
Minimum temperature (C°) -7
Optimum temperature (C°) -
Size -
Vigor -
Productivity -

Images

Eragrostis amabilis unspecified picture

Distribution

Eragrostis amabilis world distribution map, present in Australia, Panama, and United States of America

Identifiers

LSID urn:lsid:ipni.org:names:1077123-2
WFO ID wfo-0000867319
COL ID 6FY66
BDTFX ID 76962
INPN ID 633377
Wikipedia (EN) Link
Wikipedia (FR)

Synonyms

Eragrostis amabilis f. varia Cyperus paniculatus Eragrostis amabilis Eragrostis caudata Eragrostis laxa Eragrostis plumosa Poa indica Poa pseudamabilis Poa unioloides Erochloe amabilis Poa despiciens Poa speciosa Poa tenuissima Eragrostis amabilis var. breviculmis Eragrostis amabilis var. duriuscula Eragrostis amabilis var. plumosa Eragrostis amabilis var. tenella Eragrostis tenella var. breviglumis Eragrostis tenella var. insularis Eragrostis tenella var. koenigii Eragrostis tenella var. plumosa Eragrostis breviculmis

Lower taxons

Eragrostis amabilis var. breviculmis