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Danthonia
See list of 3 species in this genusDanthonia sericea Nutt. was reported from MA by several recent sources, likely based originally on Hitchcock and Chase (1950). The voucher specimen was misidentified and is Danthonia spicata.
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1a. Spikelets (10–) 14–26 (–30) mm long; lemmas 5–10 mm long excluding the awns; apical teeth of lemma (2–) 4–6 (–7) mm long
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1b. Spikelets 7–16 mm long; lemmas 2.5–5 mm long excluding the awns; apical teeth of lemma 0.5–4 mm long
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2a. Apical teeth of the lemma 0.5–2 mm long, triangular-acuminate [Fig. 207]; panicle 2–5 cm tall, crowded, the branches ascending to appressed after anthesis; pedicels shorter than or equaling the associated spikelets; leaf blades commonly involute, 0.8–2 (–3) mm wide, usually curling at maturity
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2b. Apical teeth of the lemma 2–4 mm long, aristate or setaceous [Fig. 206]; panicle 5–10 cm tall, open, the branches often divergent after anthesis; pedicels as long as or longer than the associated spikelets; leaf blades flat, 2–4 mm wide, not curling
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