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Pakistan | Family List | Poaceae | Digitaria

Digitaria radicosa (Presl) Miq., Fl. Ind. Bat. 3:437. 1857.

  • Digitaria propinqua Gaud.
  • Panicum radicosum Presl
  • Panicum sanguinale var. timorense (Kunth) Hack.
  • Panicum timorense Kunth
  • Paspalum sanguinale var. debile Hook. f.

    Trailing annual; culms 20-40 cm long, very slender. Leaf-blades narrowly lanceolate, 2-7 cm long, 2-5 mm wide. Inflorescence digitate with 2-4 racemes; racemes 3-9 cm long, the spikelets binate and loosely overlapping by about half their length on a narrowly winged triquetrous rhachis with almost smooth edges. Spikelets narrowly lanceolate, 2.5-3 mm long; lower glume an inconspicuous ovate scale up to 0.3 mm long; upper glume one-third to two-thirds as long as the spikelet, 3-nerved; lower lemma as long as the spikelet, 5(-7)-nerved, with a wide central interspace and the lateral nerves so close together that the lemma is apparently 3-nerved, appressed or silky pubescent, very rarely with a ciliate fringe, never with bristles; fruit narrowly lanceolate, yellowish or pale brown.

    Fl. & Fr. Per.: October.

    Type: Philippines, Luzon, Haenke (PR).

    Distribution: Pakistan (Punjab, introduced); Tanzania, Mauritius and the Seychelles, through tropical Asia to the Pacific Islands; introduced in a few other places.

    Digitaria radicosa is related to Digitaria ciliaris. It is recognised by its weak trailing culms, few digitate racemes, smooth-edged rhachis and narrow spikelets with contiguous lateral nerves; also the upper glume is often shorter than that of Digitaria ciliaris.


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