Heteropogon triticeus Stapf ex Craib

Species

Angiosperms > Poales > Poaceae > Heteropogon

Characteristics

Culms 80–180 cm high, often divided into more than one branch/stem at the upper nodes; nodes glabrous. Leaves: ligule a short membrane; lower leaf sheaths prominently flattened and overlapping at base, splayed out like a fan, sheath 6–12 mm wide along folded side; blade 20–80 cm long, 3–16 mm wide, flat or folded. Inflorescences 9–14 cm long; racemes of 12–26 spikelet pairs. Lower spikelet pairs: sessile (sometimes subsessile) spikelet with prominent lower glume; lower glume narrowly lanceolate, asymmetrical, 10–21 mm long; anthers 8–10 mm long; pedicellate spikelet as per sessile spikelet with pedicel c. 2 mm long. Heteromorphic (bisexual) spikelet pairs: sessile (subsessile) spikelet outline as per lower glume; lower glume very narrowly lanceolate to linear, symmetrical, 8–12 mm long, coriaceous, brown, grooved on either side of midvein, 5-veined but indistinctly so, with short ± appressed hairs on the dorsal surface (the hairs frequent across the surface but widely spaced and only occasionally touching), margin incurved around upper glume and hyaline on incurved edge; upper glume linear and rounded on the back, symmetrical, as long as lower glume, coriaceous, brown, with hyaline margin, 3-veined but indistinctly so, with hairs widely space along the middle; lower lemma c. 4 mm long; upper lemma c. 5 mm long, with an apical awn 70–150 mm long; anthers (rarely observed) c. 2–4 mm long. Pedicellate spikelets with pedicel 2–3 mm long, spikelets with prominent lower glume; lower glume lanceolate, asymmetrical, 18–25 mm long, glabrous; upper glume a little shorter than lower glume, slightly hairy on margin; lower lemma c. 14 mm long; upper lemma c. 12 mm long, both lemmas awnless; anthers 3–13 mm long. The shared stem within a heteromorphic spikelet pair (or internode) longer than the pedicel of the pedicellate spikelet; callus 3–5 mm long, densely hairy with coppery hairs to 6 mm long close to the spikelets and tapering to c. 0.5 mm long towards the pungent tip.
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Perennial from a tough rootstock. Culms stout, erect, hard, 1–3 m tall. Leaf sheaths keeled and flabellate at plant base, glabrous to hispidulous; leaf blades flat, stiff, 30–60 × 0.4–0.8 cm, glabrous to hirsute, apex acuminate; ligule very short, truncate, lacerate. Inflorescence a terminal raceme, sometimes with a few axillary racemes below it. Racemes 8–15 cm (excluding awns), 5–11-awned, 12–15 pairs of flat green homogamous spikelets below awned fertile pairs. Sessile spikelet 6–10 mm, dark brown at maturity; callus ca. 6 mm, pungent, densely brown bearded; lower glume linear-oblong, brown puberulous or pubescent, deeply grooved on either side of midvein; awn 9–16 cm, brown, column shortly pubescent. Pedicelled spikelet 15–20 mm, lower glume oblong-lanceolate, green, laterally asymmetrically winged, glabrous. Fl. and fr. Oct–Mar.
A large grass. It keeps growing from year to year. It grows 2-3 m high. It forms loose tussocks. The stems are 2-3 m tall. The leaves are 5-12 cm long by 0.3-0.4 cm wide. The flower spikes are 5-15 cm long. The male spikelets are 1-2 cm long and the female spikelets are 0.6-0.8 cm long.
Life form perennial
Growth form herb
Growth support free-standing
Foliage retention -
Sexuality hermaphrodite
Pollination -
Spread -
Mature width (meter) -
Mature height (meter) 1.0 - 3.0
Root system -
Rooting depth (meter) -
Root diameter (meter) 0.3
Flower color -
Blooming months -
Fruit color -
Fruiting months
JanFebMar
AprMayJun
JulAugSep
OctNovDec
Nitrogen fixer -
Photosynthetic pathway c4

Environment

It is a tropical plant. It grows naturally in open forest and woodlands. It requires sun and well drained soil.
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Grows in Eucalyptus forests and woodlands.
Light -
Soil humidity -
Soil texture -
Soil acidity -
Soil nutriment -
Hardiness (USDA) 8-12

Usage

The stems are broken into pieces and chewed for the sweet juice.
Uses animal food
Edible stems
Therapeutic use -
Human toxicity -
Animal toxicity -

Cultivation

Plants can be grown from seed or by division of the clump.
Mode seedlings
Germination duration (days) -
Germination temperacture (C°) -
Germination luminosity -
Germination treatment -
Minimum temperature (C°) -
Optimum temperature (C°) -
Size -
Vigor -
Productivity -

Images

Heteropogon triticeus unspecified picture

Distribution

Heteropogon triticeus world distribution map, present in Australia, China, Indonesia, Lao People's Democratic Republic, Myanmar, Philippines, Thailand, and Viet Nam

Identifiers

LSID urn:lsid:ipni.org:names:404828-1
WFO ID wfo-0000874212
COL ID 3LCHS
BDTFX ID -
INPN ID -
Wikipedia (EN) Link
Wikipedia (FR)

Synonyms

Andropogon ischyranthus Andropogon lianatherus Andropogon triticeus Sorghum triticeum Andropogon segaensis Heteropogon insignis Heteropogon ischyranthus Heteropogon lianatherus Andropogon liananthus Heteropogon triticeus Heteropogon roylei