Asian Crabgrass
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Asian Crabgrass
A Native Photo: Ankush Dave
Common name: Asian Crabgrass
Botanical name: Digitaria bicornis    Family: Poaceae (Grass family)
Synonyms: Digitaria barbata, Digitaria diversiflora, Panicum bicorne

Asian crabgrass is an annual grass with stems up to 50 cm tall, and nodes hairless. Leaves are 4-10 x 0.3-0.6 cm, linear-lanceshaped, base rounded, tip pointed or tapering; sheaths lax, to 5 cm long; ligules to 3 mm long, flat, membranous. Racemes are usually 2, rarely 3 or more, each 5-12 cm long. Rhachis is winged, sawtoothed. Spikelets are binate, heteromorphous, 2.5-3.5 mm long, oblong-elliptic, stalkless ones hairless or sparsely velvet-hairy, stalked ones pectinate, velvet-hairy. Lower glume scaly, sometimes absent. Upper glumes are 1-2.5 mm long, lanceshaped, chartaceous, silky velvet-hairy. Asian crabgrass is a pantropical grass. It is found in the Himalayas and Western Ghats below 2000 m elevations. Flowering: March-September.

Identification credit: Ankush Dave Photographed in Agra, Uttar Pradesh.

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