Pennisetum sphacelatum (Nees) T.Durand & Schinz

Species

Angiosperms > Poales > Poaceae > Pennisetum

Characteristics

Densely tufted perennial, 400-900 mm high. Leaf blade 100-400 x 2-4 mm, convolute, often filiform, hard, prominently nerved; ligule a fringe of hairs. Inflorescence a cylindrical to subglobose, spike-like panicle, 40-150 mm long, straw-coloured, culm hairy for some distance below inflorescence; rachis cylindrical, ribs rounded; peduncle stumps very short, scaberulous to minutely hairy; involucre bristles enclosing 1 spikelet; most involucral bristles equalling to twice as long as spikelet, glabrous, scabrid. Spikelet 2.5-4.5 x 1 mm; glumes unequal; lower glume minute. Florets 2; lower floret sterile, lemma 4/5-2/3 as long as spikelet, gradually tapering to an acute, acuminate or caudate apex, palea well developed or absent; upper floret bisexual, lemma firmly membranous, similar to lower lemma; anther 2.2-2.4 mm long, without tuft of hairs at apex. Flowering time Nov.-Apr.
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Densely tufted perennial 400-900 mm high. Leaf blade 100-400 x 2-4 mm, convolute, often filiform, hard, prominently nerved; ligule a fringe of hairs. Inflorescence 50-150 mm long, linear, straw-coloured; rachis cylindrical, scaberulous to minutely hairy, ribs rounded, involucral stumps very short; involucre bristles enclosing 1 spikelet; most involucral bristles equal to twice as long as spikelet, glabrous sometimes slightly plumose otherwise scabrid; culm scabrid and/or long hairy for some distance below inflorescence, rarely smooth and hairless. Spikelet 2.5-4.5 x 1 mm; lower glume minute; lower floret sterile, lemma 2/3 to as long as spikelet, gradually tapering to an acute or acuminate apex, palea well developed or absent; upper lemma firmly membranous, similar to lower lemma; anthers 2.2-2.4 mm long, without tuft of hairs at apex.
Densely tufted perennial; culms 30–150 cm. high, erect, pubescent to villous below the panicle.. Leaf-blades convolute, 10–35 cm. long, 2–4 mm. wide, hard, prominently nerved.. Panicle linear, 4–12 cm. long, dense; rhachis cylindrical, with rounded ribs and very short almost accrescent peduncle-stumps, scaberulous to pubescent; involucre enclosing 1 sessile spikelet, minutely conical at the base; bristles glabrous to weakly plumose, short, the longest 4–14 mm.. Spikelets lanceolate, 2.5–4.5 mm. long, acute to acuminate; lower glume 1/8–1/2, the upper glume (1/8)1/3–2/3(–3/4) as long as the spikelet; lower lemma barren, A to as long as the spikelet (rarely 2/3 as long in South Africa), acute to aristate-acuminate; upper lemma similar to the lower.
Perennial; up to 0.9 m high; densely tufted. Leaf blades 100-400 x 2-3 mm; often filiform. Flowers: inflorescence a spike; straw-coloured; 50-150 mm long; hairy for some distance below inflorescence; involucre with solitary spikelet; stipe absent; rachis ribs rounded; most involucral bristles 1-2 x as long as spikelets; usually white; yellow or straw-coloured; rarely purple; spikelets 2.5-4.5 x 1 mm; lower lemma gradually tapering; usually nearly as long as spikelet.
Perennial, tufted, up to 0.9 m high. Leaf blades 100-400 mm long, 2-3 mm wide, often filiform. Spikelets ± 3 mm long, 1 mm wide. Inflorescence straw-coloured, 50-150 mm long, hairy for some distance below inflorescence; most involucral bristles equalling to twice as long as spikelets.
Panicle 4–12 cm. long, linear; rhachis cylindrical with rounded ribs and very short almost accrescent peduncle stumps, scaberulous to pubescent; involucre enclosing 1 sessile spikelet, the base slightly rounded; bristles glabrous to weakly plumose, the longest 4–15 mm.
Inferior lemma 4/5 to as long as spikelet (rarely 2/3 as long in South Africa), tapering gradually to an acute, acuminate or caudate tip.
Culms 30–150 cm. high, erect, mostly pubescent to villous below the panicle.
Inferior glume 1/8–1/2, the superior (1/8)1/3–2/3(3/4) length of spikelet.
Leaf laminae 2–4 mm. wide, convolute, hard, prominently nerved.
Superior lemma firmly membranous, similar to the inferior.
Spikelets 2.5–4.5 mm. long.
Densely tufted perennial.
A grass.
Life form perennial
Growth form herb
Growth support free-standing
Foliage retention deciduous
Sexuality hermaphrodite
Pollination -
Spread -
Mature width (meter) -
Mature height (meter) 0.4 - 0.9
Root system -
Rooting depth (meter) -
Root diameter (meter) -
Flower color -
Blooming months -
Fruit color -
Fruiting months -
Nitrogen fixer -
Photosynthetic pathway -

Environment

It is a tropical plant.
Light 7-9
Soil humidity 2-8
Soil texture 1-2
Soil acidity -
Soil nutriment -
Hardiness (USDA) -

Usage

Uses -
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°) -
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Vigor -
Productivity -

Distribution

Pennisetum sphacelatum world distribution map, present in South Africa

Identifiers

LSID urn:lsid:ipni.org:names:415250-1
WFO ID wfo-0000889161
COL ID 76LM9
BDTFX ID -
INPN ID -
Wikipedia (EN)
Wikipedia (FR)

Synonyms

Gymnotrix schimperi Panicum atrichum Pennisetum sphacelatum Gymnotrix adoensis Pennisetum schimperi Gymnotrix glabra Pennisetum tenuifolium Pennisetum macrourum var. angustifolium Pennisetum sphacelatum var. tenuifolium