|University of California, Berkeley|
Key to families | Table of families and genera
1. Upper and lower lemma hairs (except callus) in 2 continuous rows of tufts ..... R. caespitosum
1' Upper lemma hairs (except callus) in isolated tufts or in tufts at margins only, lower row of tufts generally continuous
2. Callus hairs generally overlapping lower row of lemma hairs; lateral lemma lobes gradually narrowed to awn; central awn 5–17.5 mm ..... R. penicillatum
2' Callus hairs rarely reaching lower row of lemma hairs; lateral lemma lobes abruptly narrowed to awn; central awn 11–14 mm ..... R. racemosum
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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