Brachiaria eruciformis (Sm.) Griseb.

Sweet signalgrass (en), Moorochloa en forme de chenille (fr), Panic en forme de chenille (fr), Brachiaire en forme de chenille (fr)

Species

Angiosperms > Poales > Poaceae > Brachiaria

Characteristics

Loosely tufted annual, 0.1-0.5(-1.0) m high; culms erect, decumbent, sometimes straggly or procumbent and rooting at nodes. Leaf blade 20-150 x 2-6 mm; ligule a fringe of hairs. Inflorescence of secund racemes, 10-25(-30) mm long, scattered up central axis; rachis < 1 mm wide, solid, triquetrous or crescentic, sometimes narrowly winged; spikelets covering whole length of rachis and arranged in 2 rows; pedicels of equal lengths. Spikelet 1.7-2.7 mm long, dorsiventrally compressed, sparsely hairy (rarely glabrous), hairs short; lower glume up to 1/5 as long as spikelet, not separated from upper glume by an internode, 1-nerved or nerveless. Florets 2; lower floret male or sterile, lemma acute or rounded, without mucro; upper floret bisexual, lemma firmer than glumes, indurated, readily deciduous, obtuse, smooth, shiny, entire, margins only clasping edges of palea; palea rounded at apex; anther 0.9-1.1 mm long. Flowering time Nov.-May.
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Loosely tufted annual 100-500(-1000) mm high; culm erect, decumbent, sometimes straggly or procumbent and rooting at the nodes. Leaf blade 20-150 x 2-6 mm; ligule a fringe of hairs. Inflorescence of 10-25(-30) mm long racemes, secund; rachis less than 1 mm wide, solid, triquetrous or crescentic, sometimes narrowly winged; spikelets covering the whole length of the rachis and arranged in two rows; pedicels of equal lengths. Spikelet 1.7-2.7 mm long, sparsely hairy (rarely glabrous), hairs short (up to 0.5 mm long); lower glume up to 1/5 as long as spikelet, not separated from upper glume by an internode, 1-nerved or nerveless; lower lemma acute or rounded; upper lemma readily deciduous, obtuse, smooth, shiny; palea rounded at apex; anther 0.9-1.1 mm long.
Annual. Culms loosely tufted, slender, much branched, geniculately ascending, 30–40 cm tall, nodes softly hairy. Leaf sheaths glabrous or loosely tuberculate-hairy; leaf blades linear-lanceolate, 1.5–10.5 × 0.3–0.6 cm, glabrous or pilose; ligule ciliate. Inflorescence axis 3–6 cm; racemes 4–10, 1–3 cm, erect or narrowly ascending; rachis narrow, triquetrous, ciliate or scabrous; spikelets single, in 2 rows, overlapping. Spikelets elliptic, 1.8–3 mm, pilose, subacute; lower glume 0.2–0.3 mm, membranous, glabrous; upper glume and lower lemma as long as spikelet, 5-veined; upper floret readily deciduous, oblong, ca. 1.5 mm, thinly crustaceous, smooth, glossy, apex obtuse. Fl. and fr. summer–autumn. 2n = 18.
Loosely tufted annual; culms 10–60 cm. high, slender, geniculately ascending.. Leaf-blades linear to narrowly lanceolate, 2–15 cm. long, 2–6 mm. wide, glabrous or pubescent.. Inflorescence of 3–14 racemes on an axis 1–8 cm. long; racemes 0.5–2.5 cm. long, secund, bearing single spikelets imbricate on a triquetrous rhachis.. Spikelets elliptic, 1.7–2.7 mm. long, pubescent (rarely glabrous or villous), subacute; lower glume a tiny scale 0.2–0.5 mm. long (up to 1/5 the length of the spikelet); upper lemma readily deciduous, smooth, shiny, obtuse.
Annual; up to 0.5 m high; loosely tufted; sometimes straggly or procumbent. Culms erect or decumbent and rooting at nodes. Leaf blades 20-150 x 2-6 mm. Flowers: inflorescence subdigitate; racemes secund; 10-25(-30) mm long; pedicels equal; spikelets 1.7-2.7 mm long; in 2 rows; sparsely pilose; not distinctly flattened.
Annual, loosely tufted (sometimes straggly or procumbent), up to 500 mm tall. Leaf blades 20-150 mm long, 2-6 mm wide. Culms erect or decumbent and rooting at nodes. Spikelets 1.7-2.7 mm long. Racemes secund, 10-25(-30) mm long; spikelets sparsely pilose, arranged in 2 rows, pedicels equal.
Inflorescence of 3–14 racemes, these 0.5–2.5 cm. long, bearing single spikelets on a triquetrous rhachis, sometimes with a secondary racemlet at the base.
Superior floret readily deciduous, its lemma smooth, shiny and obtuse.
Spikelets 1.7–3 mm. long, pubescent (very rarely glabrous), subacute.
Inferior glume a tiny scale up to 1/5 length of spikelet.
Culms 10–60 cm. high, geniculately ascending.
Loosely tufted annual.
Life form annual
Growth form herb
Growth support free-standing
Foliage retention deciduous
Sexuality hermaphrodite
Pollination -
Spread -
Mature width (meter) -
Mature height (meter) 0.13 - 0.55
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

Light -
Soil humidity 3-6
Soil texture 1-2
Soil acidity -
Soil nutriment -
Hardiness (USDA) 8-10

Usage

Uses forage ornamental
Edible -
Therapeutic use -
Human toxicity -
Animal toxicity -

Cultivation

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

Images

Brachiaria eruciformis unspecified picture

Distribution

Brachiaria eruciformis world distribution map, present in China, France, Pakistan, United States of America, and South Africa

Conservation status

Brachiaria eruciformis threat status: Least Concern

Identifiers

LSID urn:lsid:ipni.org:names:66248-3
WFO ID wfo-0000854100
COL ID MSFF
BDTFX ID 10039
INPN ID 86226
Wikipedia (EN)
Wikipedia (FR) Link

Synonyms

Brachiaria cruciformis Brachiaria eruciformis Panicum cruciforme Panicum koenigii Panicum wightianum Echinochloa eruciformis Panicum isachne var. mexicana Panicum isachne var. mexicanum