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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.
Shrub to tree, glabrous, hairy, and/or with glandular scale-like hairs. Stem: prostrate to erect, bark thin, sometimes peeling or shredding. Leaf: alternate, evergreen or deciduous, ovate to obovate to elliptic, margin entire, flat to rolled under. Inflorescence: raceme, 1–many-flowered, bracts green to red-brown. Flower: sepals, petals generally 5, corolla radial to bilateral, 1–5 cm, petals free to ± fused, spots or blotch present or 0; anther awns 0; ovary superior. Fruit: capsule, septicidal, dehiscing base to tip or tip to base, placentas axile. Seed: many, fusiform, ± flat to not, wings and/or tails present or 0.
± 1000 species: northern hemisphere, tropical Asia, to Australia. (Greek: rose tree)
Unabridged references: [Chamberlain 1982. Notes Roy. Bot. Gard. Edinburgh 39:209–486; Cullen 1980 Notes Roy. Bot. Gard. Edinburgh 39:1–207]
1. Leaves deciduous, thin; stamens 5; corolla white to pink to salmon, upper petal with yellow to orange blotch at base; fruit dehiscing tip to base ..... R. occidentale
1' Leaves evergreen, leathery; stamens (8)10; corolla white to cream or to pink or purple; fruit dehiscing tip to base or base to tip
2. Plant with ± flat glandular scales at least abaxially on leaf; petals white to cream; fruit dehiscing base to tip ..... R. columbianum
2' Plant without ± flat glandular scales; petals white to pink or purple; fruit dehiscing tip to base ..... R. macrophyllum
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.