Jepson Flora Project: Jepson Interchange    

link to manual TREATMENT FROM THE JEPSON MANUAL (1993) previous taxon | next taxon
Jepson Interchange (more information)
©Copyright 1993 by the Regents of the University of California

  • Up-to-date information about California vascular plants is available from the Jepson eFlora.



Annual to tree
Leaves simple to pinnately to palmately compound, generally alternate; stipules free to fused, persistent to deciduous
Inflorescence: cyme, raceme, panicle, or flowers solitary
Flower generally bisexual, radial; hypanthium free or fused to ovary, saucer- to funnel-shaped, often with bractlets alternate with sepals; sepals generally 5; petals generally 5, free; stamens (0)5–many, pistils (0)1–many, simple or compound; ovary superior to inferior, styles 1–5
Fruit: achene, follicle, drupe, pome, or blackberry- to raspberry-like
Seeds generally 1–5
Genera in family: 110 genera, ± 3000 species: worldwide, especially temp. Many cultivated for ornamental and fruit, especially Cotoneaster , Fragaria , Malus , Prunus , Pyracantha, Rosa , and Rubus
Reference: [Robertson 1974 J Arnold Arbor 55:303–332,344–401,611–662]
Family description, key to genera by Barbara Ertter and Dieter H. Wilken.



Thomas J. Rosatti

Species in genus: 1 sp
Etymology: (derivation unknown)
Reference: [Landon 1975 Taxon 24:200]


O. cerasiformis (Hook. & Arn.) J.W. Landon

Shrub or small tree, 1–5 m, ± dioecious
Leaves deciduous, 5–13 cm, elliptic to narrowly obovate, generally entire, ± rolled under, paler below, glabrous above; stipules soon deciduous; petiole 5–15 mm
Inflorescence: racemes on short lateral branches, 3–10 cm, pendent, bracted; bractlets 1–2 at pedicel tip
Flowers fragrant (generally some bisexual); hypanthium ± 5 mm; petals clawed, white
Staminate flower: hypanthium persistent; petals spreading, > pistillate petals; stamens 15, prominent
Pistillate flower: most of hypanthium deciduous; petals erect; ovaries generally 5, prominent, free, superior, styles deciduous
Fruit: drupes 1–5 per pistillate flower, 5–15 mm, bean-shaped, blue-glaucous
Chromosomes: n=8
Ecology: Shaded coniferous forest, chaparral
Elevation: < 1700 m.
Bioregional distribution: Northwestern California, w Cascade Range, w Sierra Nevada, Sacramento Valley (Sutter Buttes), south-central San Joaquin Valley, w Central Western California, sw Western Transverse Ranges
Distribution outside California: to British Columbia
Synonyms: Osmaronia c. (Hook. & Arn.) Greene
Horticultural information: partSHD: 4, 5, 6, 15, 16, 17 &IRR: 7, 8, 9, 14, 18, 19, 20, 21, 22, 23, 24.

previous taxon | next taxon
bioregional map for OEMLERIA%20cerasiformis being generated

Retrieve Jepson Interchange Index to Plant Names entry for Oemleria cerasiformis
Retrieve dichotomous key for Oemleria
Overlay Consortium of California Herbaria specimen data by county on this map
Show other taxa with the same California distribution | Read about bioregions | Get lists of plants in a bioregion
Return to the Jepson Interchange main page
Return to treatment index page

University & Jepson Herbaria Home Page |
General Information | University Herbarium | Jepson Herbarium |
Visiting the Herbaria | On-line Resources | Research |
Education | Related Sites
Copyright © by the Regents of the University of California