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Key to families | Table of families and genera
1. Spikelets narrowly cylindrical; glumes of fertile spikelets 1-awned or long-toothed ..... A. cylindrica
1' Spikelets lance-ovate to urn-shaped; glumes of fertile spikelets 2–5-awned
2. Distal spikelets > 7 mm; fertile lemmas 2–3-toothed, 1 occasionally extended as awn to 10 mm ..... A. triuncialis
2' Distal spikelets 2–5 mm; fertile lemmas with 2–3 awns to 40 mm
3. Basal vestigial spikelets 1(2); spikelets gradually narrowing distally ..... [A. geniculata, including A. ovata]
3' Basal vestigial spikelets 3(2); lower spikelets ± ovate, upper abruptly ± oblong ..... A. neglecta
Citation for the whole project: Jepson Flora Project (eds.) [year] Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html [accessed on month, day, year]
Citation for an individual treatment: [Author of taxon treatment] [year]. [Taxon name] in Jepson Flora Project (eds.) Jepson eFlora, [URL for treatment]. Accessed on [month, day, year].
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