Abstract
Poa sachensis, a new species from the Sach Pass, Western Himalaya, is described and illustrated. It is a member of P. subg. Ochlopoa sect. Alpinae, and closely allied to P. alpina, but differs from the latter by its lower glume one‐nerved, callus scantly hairy, lemma (3.87–) 4.18–4.54 (–4.65) mm long, purplish, surface between nerves glabrous, palea proliferate and keels ciliate 1/2nd to 1/3rd part, and two stamens in fertile floret with anther (2.42–) 2.67–3.08 (–3.21) mm long. Further, we have added P. diaphora var. alpina for the first time to the flora of India based on specimens collected from the semiarid habitats of Spiti Valley. Information on the distribution, habitat, flowering, and fruiting cycles is provided along with a distribution map for each taxon.Keywords: alpine grasses, Poa alpina, P. subg. Pseudopoa, P. subg. Ochlopoa, Western Himalaya
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