|University of California, Berkeley|
Key to families | Table of families and genera
1. Bracts fused around node; leaf blades glabrous, margins ciliate ..... O. perfoliata
1' Bracts free; leaf blades hairy, glandular, margins not ciliate
2. Involucres peduncled (occasionally sessile) at lower nodes; bract awns 0.2–0.5 mm; leaf blades 0.1–0.7 cm wide ..... O. dendroidea subsp. dendroidea
2' Involucres generally sessile; bract awns 1–3 mm; leaf blades (0.1)0.5–1.2 cm wide ..... O. watsonii
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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