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Key to Koeleria

Poaceae

Koeleria

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1 Awns of the lemmas 1 mm long, essentially a minute prolonged extension of the lemma midvein; lemma apices acute; spikelets 2.5-6.5 mm long; ligule 0.5-2 mm long; [upland prairies, glades, other often dry to mesic, sandy habitats; primarily midwestern, scattered further south and east]
1 Awns of the lemmas 3-8 mm long (therefore conspicuous and not merely a minute midvein extension), bent or geniculate and often basally-twisted and exceeding lemma apices; lemma apices bifid or bicuspidate; spikelets 5-7.5 mm long; ligule 0.5-4 mm long; [cool, moist northern sites, rare and disjunct in high elevation areas s. to VA]