|Jepson Flora Project: Jepson Interchange|
|TREATMENT FROM THE JEPSON MANUAL (1993)||
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Jepson Interchange (more information)
©Copyright 1993 by the Regents of the University of California
AND IS MAINTAINED FOR ARCHIVAL PURPOSES ONLY
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)5many, pistils (0)1many, simple or compound; ovary superior to inferior, styles 15
Fruit: achene, follicle, drupe, pome, or blackberry- to raspberry-like
Seeds generally 15
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 55:303332,344401,611662]
Family description, key to genera by Barbara Ertter and Dieter H. Wilken.
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.
Dwarf shrub, generally < 10 dm, ± rhizomedSee the CNPS Inventory for information about endangerment and rarity.
Stem gray-brown; prickles generally many, both slender and ± thick-based, straight
Leaf: leaflets glabrous to hairy; terminal leaflet ± 1040 mm, generally ± elliptic, tip ± obtuse, margins ± single- or double-toothed, ± glandular
Inflorescence generally 15-flowered; pedicels generally 1030 mm, glabrous to glandular
Flower: hypanthium generally ± 4 mm wide at flower, glabrous, neck ± 3 mm wide; sepals generally ± glandular, entire, tip generally ± = body, entire or toothed; petals ± 1520 mm; pistils ± 1020
Fruit ± 12 mm wide
Ecology: Pine woodlands, canyons
Elevation: generally < 300 m.
Bioregional distribution: west-central Central Western California. Possibly hybrids of R. spithamea , R. gymnocarpa , or others; further study essential
Horticultural information: DRN, part SHD: 4, 5 &IRR: 7, 14, 15, 16, 17, 19, 20, 21, 22, 23, 24; also STBL.