Digitaria abludens

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China (S. Henan to Yunnan) to Tropical Asia: Andaman Is., Assam, Bangladesh, China South-Central, China Southeast, East Himalaya, Hainan, India, Jawa, Laos, Lesser Sunda Is., Malaya, Myanmar, Nepal, New Guinea, Nicobar Is., Pakistan, Philippines, Sulawesi, Thailand, Vietnam, West Himalaya as per POWO;
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Common name: Stalked Crabgrass
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Annuals. Culms to 50 cm high; nodes glabrous. Leaves 4-10 x 0.3-0.6 cm, linear-lanceolate, base rounded, apex acute or acuminate; sheaths lax, to 5 cm long; ligules to 3 mm long, truncate, membranous. Racemes usually 2, rarely 3 or more, each 5-12 cm long. Rhachis winged, serrate. Spikelets binate, heteromorphous, 2.5-3.5 mm long, oblong-elliptic, sessile ones glabrous or sparsely pubescent, pedicelled ones pectinate, pubescent. Lower glume scaly, sometimes absent. Upper glume 1-2.5 mm long, lanceolate, chartaceous, silky pubescent. Lower floret empty. Upper floret bisexual. First lemma 2.5-3.5 x 1 mm, elliptic-lanceolate, chartaceous, 7-nerved. Second lemma 2.5-3 x 1 mm, elliptic-lanceolate, acuminate, crustaceous. Palea 2.5-3 x 0.5-1 mm, elliptic-lanceolate, crustaceous, 2-keeled. Stamens 3; anthers c. 1 mm. Stigmas c. 1 mm long pink.

Flowering and fruiting: March-September
Deciduous forests
Pantropical
(Attributions -Dr. N Sasidharan (Dr. B P Pal Fellow), Kerala Forest Research Institute, Peechi from India Biodiversity Portal)
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Submission of Digitaria abludence : 2 posts by 2 authors. Attachments (3)
Plant name: Digitaria abludens (Roem.& Schult.) Veldkamp, Blumea 21: 53. 1973.
Family: Poaceae
Description:
Herbs, annuals; culms erect or ascending, 30–90 cm tall. Leaf sheaths glabrous; leaf blades linear-lanceolate, 2-15 × 0.2-0.4 cm, scabrous; ligule 1–3 mm. Inflorescence axis 1–4 cm; racemes 2–5, loosely spiculate, divaricate, 3–8 cm; spikelets paired or ternate, or the clusters grading into short branchlets; rachis slenderly triquetrous, not winged,  0.5 mm broad, margins scabrous; pedicels very unequal, smoothly terete, spreading out from rachis, tips disklike. Spikelets elliptic, 1-2 mm, hairs clavate; lower glume absent; upper glume narrower than spikelet, 3–5-veined, intervein spaces and margins pubescent; lower lemma slightly shorter than spikelet, 5–7-veined, interveins and margins pubescent, tip subrounded; upper lemma slightly protruding, yellowish brown becoming chestnut at maturity with a pale apiculate apex. Anthers 3. Caryopsis ellipsoid.
Habitat & location: Rare; in hill side forests. Photographed at S.R.Puram ghat.

Thanks, …, for a new addition to efi.

 

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