|University of California, Berkeley|
Key to families | Table of families and genera
1. Lemma teeth unequal, central tooth longest
2. Lemma 6–7 mm, teeth awned, awns > 1 mm; fruit ± 2.5 mm ..... O. viscida
2' Lemma <= 5 mm, teeth sharp-pointed or awned, awns < 0.5 mm; fruit <= 2 mm
3. Plant sparsely hairy; stem generally prostrate; spikelets well separated on axis below, crowded toward tip; South Coast, Western Transverse Ranges, San Gabriel Mountains, Peninsular Ranges ..... O. californica (2)
3' Plant conspicuously hairy, ± gray; stem erect or ± spreading; spikelets crowded, inflorescence ± head-like; c Sierra Nevada Foothills, San Joaquin Valley ..... O. inaequalis
1' Lemma teeth ± equal
4. Stem generally prostrate; fruit 1.5–2 mm ..... O. californica (2)
4' Stem erect, ascending, or decumbent; fruit 2–3 mm
5. Stem branching only at lower nodes; upper spikelets densely crowded, lower well separated; plant generally densely hairy ..... O. pilosa
5' Stem often branching from upper nodes; spikelets ± evenly spaced, not densely crowded; plant sparsely hairy ..... O. tenuis
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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