|University of California, Berkeley|
|Directory News Site Map Home|
Key to families | Table of families and genera
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.
Annual, erect to spreading, glabrous or sparsely glandular. Leaf: basal, linear to narrow, awns 0; ocreae 0. Inflorescence: terminal, cyme-like; peduncles 0 or erect or reflexed; involucres 1, tubular, teeth (3)4, generally glabrous, awned. Flower: 2–10, glabrous or hairy and glandular; perianth white to rose or green-yellow, lobes 6, entire; stamens 9. Fruit: brown to maroon, generally elliptic, glabrous; embryo curved.
3 species: temperate western North America, southern South America. (Greek: sharp case, for awned involucre) [Ertter 1980 Brittonia 32:70–102] Other taxa in TJM (1993) moved to Acanthoscyphus, Sidotheca.
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].
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.