- Group 1Lycophytes, Monilophytes
- Group 2Gymnosperms
- Group 3Monocots
- Group 4Woody angiosperms with opposite or whorled leaves
- Group 5Woody angiosperms with alternate leaves
- Group 6Herbaceous angiosperms with inferior ovaries
- Group 7Herbaceous angiosperms with superior ovaries and zygomorphic flowers
- Group 8Herbaceous angiosperms with superior ovaries, actinomorphic flowers, and 2 or more distinct carpels
- Group 9Herbaceous angiosperms with superior ovaries, actinomorphic flowers, connate petals, and a solitary carpel or 2 or more connate carpels
- Group 10Herbaceous angiosperms with superior ovaries, actinomorphic flowers, distinct petals or the petals lacking, and 2 or more connate carpels
Danthonia 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.
1b. Spikelets 7–16 mm long; lemmas 2.5–5 mm long excluding the awns; apical teeth of lemma 0.5–4 mm long
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
Show photos of: Each photo represents one species in this genus.