Andropogon eucomus Nees

Species

Angiosperms > Poales > Poaceae > Andropogon

Characteristics

Densely tufted perennial 200-900 mm high; culm much branched above, tinged reddish. Leaf blade 40-200 x to 4 mm, folded; sheath shortly auriculate; ligule a fimbriate membrane. Inflorescence plumose, of 2-6 flowering branches; racemes 2-5 per spatheole, 20.5-40.0 mm long; pedicels and internodes filiform, hairs white, silky, 5-10 mm long, twice as long as spikelet, both margins hairy. All spikelets sessile, but each one is accompanied by an empty hairy pedicel of the pedicelled spikelet. Sessile spikelet 2-3 mm long, glabrous; glumes lack pits between nerves; lower glume deeply and narrowly grooved, wingless, glabrous; upper glume flat, awnless; lemma bilobed or entire, awn 12-18 mm long, flexuous; anthers 0.3-1.8 mm long. Pedicellate spikelet absent.
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Densely tufted perennial, 200-900 mm high; culms much branched above, tinged reddish. Leaf blade 40-200 x 1-3 mm; sheaths shortly auriculate; ligule a minutely fimbriate membrane. Inflorescence digitate, plumose, of 2-5 racemes; pedicels and internodes filiform, white silky hairs 5-10 mm long on margins; sessile spikelets are accompanied by a hairy empty pedicel in place of pedicelled spikelet. Sessile spikelet 2-3 mm long, glabrous; lower glume deeply and narrowly grooved; upper glume flat, awnless. Florets 2; lower floret reduced to a lemma, awnless; upper floret bisexual, lemma entire or minutely lobed, awn 12-18 mm long, flexuous, glabrous. Pedicellate spikelets absent. Flowering time Nov.-May.
Tufted perennial; culms 40–100 cm. high.. Leaf-blades 4–20 cm. long, 1–3 mm. wide, folded, abruptly acute.. Inflorescence of digitate (3–6-nate) racemes loosely gathered into a false panicle; racemes 2–4 cm. long, plumose; internodes and pedicels filiform, arcuate, plumose with hairs 7–10 mm. long.. Sessile spikelet 2–3 mm. long, with a short callus; lower glume linear, concave, thin and nerveless between the keels, glabrous, wingless; upper glume awnless; upper lemma bilobed for 1/4–1/2 its length, with a flexuous awn 12–18 mm. long.. Pedicelled spikelet suppressed.
Perennial; up to 0.9 m high; densely tufted. Leaf blades 40-200 x 4 mm. Flowers: a complex; false panicle; plumose; internode and pedicel hairs at least as long as sessile spikelets; racemes 2-5 per spathe; with white silky hairs twice as long as spikelets; spikelets 2-3 mm long; all sessile; accompanied by a hairy empty pedicel; silky plumose; of 2-6 flowering branches; lower glume of sessile spikelets deeply and narrowly grooved.
Perennial, densely tufted, up to 0.9 m high. Leaf blades 40-200 mm long, up to 4 mm wide. Spikelets 2-3 mm long (all sessile, accompanied by a hairy empty pedicel). Inflorescence plumose, of 2-6 flowering branches; racemes 2-5 per spathe, with white silky hairs twice as long as spikelets; lower glume of sessile spikelets deeply and narrowly grooved.
Sessile spikelets 2–5.5 mm long, glabrous, often reddish; inferior glume with a broad median groove, glabrous; superior glume ± flat on the back; superior lemma entire or minutely bidentate; awn flexuous, 7–22 mm long, often somewhat inconspicuous, often reddish; anthers 0.3–1.8 mm long, straw-coloured to reddish.
Racemes 2.5–4 cm long, in open subdigitate groups of (2)3–5, plumose, zig-zag, exserted from the spatheole at maturity; peduncles longer than the racemes; internodes and pedicels very delicate, filiform, ciliate with silky hairs 5–10(11) mm long on both margins.
Leaves glabrous except for the ligule area; sheath shortly auriculate at the top; ligule a fimbriate membrane, 0.5–1.5 mm long; laminas 2–50 cm × 1.2–4 mm, flat or folded, abruptly acute at the apex and mucronate.
Perennial to 1 m. Leaves linear. Spikelets in 2-5 racemes per spathe, with white-silky hairs twice as long as spikelets, pedicellate spikelet vestigial, sessile spikelet awned.
Delicate or ± robust, caespitose perennial; culms up to 250 cm high, erect, much branched above, tinged with red.
Pedicelled spikelets absent or reduced to a sterile glume up to 3 mm long.
Life form perennial
Growth form herb
Growth support free-standing
Foliage retention -
Sexuality hermaphrodite
Pollination -
Spread -
Mature width (meter) -
Mature height (meter) 0.65 - 0.9
Root system -
Rooting depth (meter) -
Root diameter (meter) -
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Fruit color -
Fruiting months -
Nitrogen fixer -
Photosynthetic pathway c4

Environment

Light -
Soil humidity 6-9
Soil texture -
Soil acidity -
Soil nutriment -
Hardiness (USDA) 9-12

Usage

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

Cultivation

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

Images

Andropogon eucomus unspecified picture

Distribution

Andropogon eucomus world distribution map, present in Angola, Burkina Faso, Botswana, Central African Republic, Congo, Comoros, Ethiopia, Lesotho, Madagascar, Mozambique, Namibia, eSwatini, Tanzania, United Republic of, Uganda, South Africa, Zambia, and Zimbabwe

Identifiers

LSID urn:lsid:ipni.org:names:387840-1
WFO ID wfo-0000846524
COL ID 6723W
BDTFX ID -
INPN ID -
Wikipedia (EN)
Wikipedia (FR)

Synonyms

Eriopodium kraussii Sorghum eucomum Andropogon eucomus

Lower taxons

Andropogon eucomus subsp. huillensis