Digitaria leptorrhachis Stapf

Species

Angiosperms > Poales > Poaceae > Digitaria

Characteristics

Annual, or perhaps a short-lived perennial; culms 30–100 cm. high, 1–2 mm. in diameter, wiry, ascending from a decumbent base, rooting at the lower nodes; nodes villous, rarely glabrous.. Leaf-blades 5–20 cm. long, 2–6 mm. wide, pubescent or rarely glabrous.. Inflorescence of 5–12(–17) racemes, these subdigitate or arranged on a common axis up to 10 cm. long; racemes 4–11 cm. long, sometimes bare at the base but with traces of arrested spikelets there, the spikelets paired on a slender triquetrous rhachis which occasionally bears a few long white hairs.. Spikelets elliptic, 1.4–2 mm. long; lower glume absent or an obscure rim; upper glume as long as the spikelet, 5-nerved, puberulous; lower lemma as long as the spikelet, 7-nerved, pubescent (shortly and often obscurely) with stripes of appressed hairs, these smooth-walled, often with curled tips (but rarely verrucose–see note); fruit ellipsoid, grey.
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Leaf laminae (2)4–10(20) × (0.1)0.2–0.4(0.6) cm., linear, flat, loosely to densely covered by bulbous based bristles and scaberulous on both surfaces, scabrous along the crisped margin.
Superior glume as long as the spikelet, oblong, 3–5-nerved, appressed hairy, hairs fine, semiverrucose, with incurved apex.
Racemes often bare at the base, but with traces of arrested spikelets, and sometimes clothed in spreading white hairs.
Inflorescence composed of (1)5–10(20) racemes, (3)5–12(15) cm. long, solitary along a well developed common axis.
Superior lemma as long as the spikelet, oblong, acute, pale yellow (unripe) to purplish or bluish grey.
Pedicels 2-nate, 0.3–2 mm. long, triquetrous to compressed, scabrous, slightly broadened at the apex.
Rhachis triquetrous, scarcely winged, up to 0.3 mm. broad, smooth with scabrous margins.
Culms (10)20–60(120) cm., ascending, glabrous, nodes dark and (sub)glabrous to bearded.
Decumbent or ascending annual or short-lived perennial up to about 60 cm. high
Inferior lemma as long as the spikelet, oblong, 7-nerved, appressed hairy.
Leaf sheaths loosely to densely covered by bulbous based bristles.
A decumbent or creeping annual (or short lived perennial?).
Ligule 1–2 mm. long, ovate to truncate, entire.
Inferior glume very small, nerveless, hyaline.
Spikelets 1.3–1.9 mm. long, oblong.
Life form annual
Growth form
Growth support -
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Sexuality hermaphrodite
Pollination -
Spread -
Mature width (meter) -
Mature height (meter) 0.45 - 0.8
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Nitrogen fixer -
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Environment

Light -
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Hardiness (USDA) 9-12

Usage

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

Cultivation

Mode -
Germination duration (days) -
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Distribution

Digitaria leptorrhachis world distribution map, present in Benin, Central African Republic, Congo, Gabon, Ghana, Mali, Nigeria, Sudan, Senegal, Chad, Togo, Tanzania, United Republic of, and Zambia

Identifiers

LSID urn:lsid:ipni.org:names:398919-1
WFO ID wfo-0000864103
COL ID 363L3
BDTFX ID -
INPN ID -
Wikipedia (EN)
Wikipedia (FR)

Synonyms

Digitaria annua Digitaria nigritiana Digitaria richardsonii Panicum leptorhachis Panicum stoloniferissimum Digitaria chevalieri Digitaria bredoensis Digitaria leptorrhachis Digitaria polybotrya Digitaria stoloniferissima Panicum nigritianum