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Pakistan | Family List | Poaceae | Ischaemum

Ischaemum molle Hook. f., Fl. Brit. Ind. 7:128. 1896. Blatter & McCann, Bombay Grasses 13. 1935; Bor, Grasses Burma Ceyl. Ind. Pak. 183. 1960.

Tufted perennial; culms erect or geniculately ascending, 25-130 cm high, often robust, usually branched. Leaf-blades 15-30 cm long, 6-13 mm wide. Inflorescences terminal and axillary, of paired racemes each 4-14 cm long; intemodes and pedicels clavate, ciliate. Sessile spikelet broadly ovate, 5.6 mm long; lower glume coriaceous and nodular on the margins below, the back smooth and shining or faintly ruguose, membranous above, densely ciliate to quite glabrous, 2-keeled along its length; upper lemma with an awn 12-20 mm long. Pedicelled spikelet resembling the sessile or often much smoother, and on a pedicel about one-third the length of the internode.

Type: India, Dalzell (K) and Duthie (K).

Distribution: Pakistan (Punjab); India.

This species is easily confused with Ischaemum rugosun, form which it differs by the faintly rugose rather than transversely ridged, and often ciliate lower glume of the sessile spikelet. Typically a swamp grass not previously recognised in Pakistan for what it is, the cited specimens having earlier been thought to be Ischaemum rugosum.


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