What’s a dichotomous key? HelpSee list of 3 species in this genus
- 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
Reference: Terrell (2007).
1b. Glume 3.5–15 mm long, the body 0.25–0.75 times as tall as the column of florets [Fig. 239]; plants annual or perennial, with (2–) 5- to 22-flowered spikelets (when annual, with 10 or more florets per spikelet)
2a. Rachis of the inflorescence rough on the surface opposite the spikelet; spikelets with (10–) 11–22 florets; apex of the glume of upper spikelets not reaching the tip of the lowest lemma on the same side; lemmas of the upper florets with a conspicuous awn to 10 mm (rarely absent); leaf blades rolled in young shoots, (2–) 3–8 (–13) mm wide at maturity
2b. Rachis of the inflorescence smooth on the surface opposite the spikelet, rough only on the angles; spikelets with mostly (2–) 5–10 florets [Fig. 239]; apex of the glume of upper spikelets more or less extending to the tip of the lowest lemma on the same side; lemmas with relatively short awns (awns sometimes absent or rarely prolonged to 8 mm); leaf blades folded in young shoots, (1–) 2–4 (–6) mm wide at maturity
Show photos of: Each photo represents one species in this genus.