|University of California, Berkeley|
|Directory News Site Map Home|
Key to families | Table of families and genera
This text currently parallels The Jepson Manual: Vascular Plants of California, Second Edition that is now available at the University of California Press.
Text appearing in blue on this page will not appear in the printed book; it will be displayed only on the Web. Specimen numbers are hyperlinked to records in the Consortium of California Herbaria data view where possible. Taxa are hyperlinked to entries in the Jepson Interchange via the "[Online Interchange]" link.
Perennial, taprooted, cushion-forming, generally coarsely hairy or tomentose.
Leaf: basal-most bladeless sheaths; distal blades narrowly ovate to round, pinnately or ternately dissected, segments lanceolate or oblong.
Inflorescence: umbels compound, head-like, spheric or hemispheric; peduncles spreading; bracts 0; involucel 1-sided, bractlets fused to ± free; rays few to many, spreading to spreading- ascending; fertile pedicels short, sterile > fruit.
Flower: bisexual, staminate, or sterile; calyx lobes conspicuous or not; petals spoon-shaped or oblanceolate, generally white or yellow, or purple in age, early- deciduous, tips narrowed; ovary tip projection 0.
Fruit: ovate to round, ± compressed side-to-side to cylindric, hairy; ribs ± equal, thread-like; oil tubes several per rib-interval; fruit axis divided to base.
Seed: face deeply grooved.
3 species: high mtns of CA-FP. (Greek: mountain dwarf) [Shevock & Norris 1981 Fremontia 9:22–25]
1. Herbage white-tomentose; umbels hemispheric; corolla yellow or maroon; anthers yellow; calyx lobes inconspicuous, obscured by hairs ..... O. vestita
1' Herbage gray-hairy; umbels spheric; corolla white; anthers purple; calyx lobes conspicuous, spreading
2. Fls appearing ± with leaf blades; bladeless sheaths 0.5–2 cm; umbels 1–3 cm diam; rays 5–15, 2–8 mm; calyx lobes yellow ..... O. clementis
2' Fls appearing before leaf blades; bladeless sheaths 3–6 cm; umbels 2.4–4.5 cm diam; rays 20–35, 5–15 mm; calyx lobes purple ..... O. purpurascens
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].
We encourage links to these pages, but the content may not be downloaded for reposting, repackaging, redistributing, or sale in any form, without written permission from The Jepson Herbarium.