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Pakistan | Family List | Poaceae | Pennisetum

Pennisetum orientale L.C. Rich. in Pers., Syn. Pl. 1:72. 1805. Boiss., Fl. Or. 5:445. 1884; Hook. f., Fl. Brit. Ind. 7:86. 1876; Blatter & McCann, Bombay Grasses 179. 1935; Sultan & Stewart, Grasses W. Pak. 1:65. 1958; Bor, Grasses Burma Ceyl. Ind. Pak. 345. 1960; Bor in Towns., Guest & Al-Rawi, Fl. Iraq 9:498. 1968; Bor in Rech. f., Fl. Iran.70:501. 1970; Tzvelev, Poacear URSS 682.1976.

  • Pennisetum fasciculatum Trin.
  • Pennisetum triflorum Nees ex Steud.

    Shortly rhizornatous perennial often forming large clumps; culms 20-200 cm high or more, erect or ascending, woody and often densely fastigiately branched below. Leaf-blades up to .60 cm long and 15 mm wide, flat or convolute, glabrous, scaberulous or pubescent. Panicle linear, 8-30 cm long, often interrupted; rhachis with shallow angular ribs below the stumpless scars, scaberulous to pubescent; involucre borne upon a slender pubescent stipe 0.5-1.5 mm long, enclosing 1-3 (-5) spikelets, one of them sessile, the others shortly pedicelled; bristles, at least the inner, loosely plumose, the longest 15-30 mm long. Spikelets lanceolate, 4.5-6.5 mm long; lower glume a quarter the length of the spikelet and obtuse, to one-third or two-fifths as long and acute, rarely as much as half as long and acuminate, 1-nerved, occasionally nerveless; upper glume half to three-quarters the length of the spikelet, acute to acuminate; lower lemma as long as the spikelet, male, setaceously acuminate; upper lemma similar to the lower; anthers apiculate, without a tuft of hair at the tip.

    Fl. & Fr. Per.: April-October.

    Type locality: Orient.

    Distribution: Pakistan (Sind, Baluchistan, Punjab, N.W.F.P., Gilgit & Kashmir); North Africa, through Arabia to Central and Southwest Asia; India and Nepal.

    A very variable species ranging from small tufted plants 20-30 cm high with short panicles to quite large clumps well over 2 m high with panicles up to 30 cm long. The number of spikelets in each involucre varies from 1 to 5, those with 3 having arbitrarily been separated as Pennisetum triflorum. Pennisetum orientale is very similar to the African and Mediterranean Pennisetum setaceum (Forssk.) Chiov., which differs in having a thickened leaf midrib and a tighter panicle with longer bristles.


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