Jepson Flora Project: Jepson Interchange    

Jepson Interchange (more information)
©Copyright 1993 by the Regents of the University of California




Annual to tree
Inflorescence: cyme, raceme, panicle, or flowers solitary
Seeds generally 1–5


Barbara Ertter

Shrub to vine, often thicket-forming, generally prickly
Leaves generally odd-pinnately compound; stipules generally attached to petiole, generally gland-margined
Inflorescence: generally ± cyme or flowers solitary
Flower: hypanthium urn-shaped; bractlets 0; sepals 5, often with long expanded tip; petals generally 5 (except cultivars), generally pink in CA (white to red or yellow); stamens generally > 20; pistils generally many, ovaries superior, jointed to generally hairy styles
Fruit: bony achenes enclosed in fleshy, generally reddish hypanthium (hip)
Species in genus: 100+ species: generally n temp
Etymology: (Latin: ancient name)
Spp. hybridize freely; other non-natives established locally.


R. californica Cham. & Schldl.


Shrub 8–25 dm, often thicket-forming
Stem gray-brown; prickles generally few, compressed, generally strongly curved
Leaf: leaflets ± hairy, sometimes glandular; terminal leaflet generally 15–60 mm, ± elliptic, tip ± obtuse, margins single- or double-toothed, glandular or not
Inflorescence 1–20-flowered; pedicels generally ± 5–20 mm, generally ± hairy, glandless
Flower: hypanthium 3–5 mm wide at flower, glabrous or sparsely hairy, neck 2–5 mm wide; sepals glandular or not, entire, tip generally ± = body, entire; petals generally 10–20 mm; pistils > 10
Fruit 8–20 mm wide
Chromosomes: n=14
Ecology: Generally ± moist areas, especially streambanks
Elevation: < 1600 m.
Bioregional distribution: California Floristic Province (except High Cascade Range, High Sierra Nevada)
Distribution outside California: s Oregon, n Baja California
Needs study
Horticultural information: SUN or part SHD: 5, 6, 15, 16, 17 &IRR: 2, 7, 8, 9, 10, 14, 18, 19, 20, 21, 22, 23, 24; INV; also STBL.

previous taxon | next taxon
bioregional map for ROSA%20californica being generated

Retrieve Jepson Interchange Index to Plant Names entry for Rosa californica
Retrieve dichotomous key for Rosa
Overlay Consortium of California Herbaria specimen data by county on this map
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