|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.
Perennial to shrub, often bramble-forming, often prickly, prostrate or clambering to erect
Leaves generally palmately lobed to compound; leaflets often stalked, toothed
Flower: hypanthium shallow; bractlets 0; sepals 5, generally reflexed, tips generally linear; petals 5; stamens generally > 20; pistils fewmany, ovaries superior, jointed to slender to club-shaped styles
Fruit: aggregate of sweet, fleshy-coated achenes (drupelets) that generally separate jointly from receptacle (raspberry-like) or separate jointly with part of fleshy receptacle (blackberry-like)
Species in genus: 200700 species: worldwide, especially n temp, Andes
Etymology: (Latin: ancient name for bramble)
Coastal forms often have smaller, hairier, rounder leaves; hybrids and other escapes from cultivated expected.
Stem 515 mm diam, 5-angled; prickles many, ± wide-based, generally ± curved
Leaf compound; stipules linear; petiole ± 39 cm; leaflets 35, generally widest above middle, sharply toothed, white below; longest leaflet stalk ± 1040 mm; longest leaflet blade ± 511 cm
Inflorescence: panicle, many-flowered, nonglandular
Flower: sepal tips generally ± 1 mm; petals 1015 mm, obovate, white to pinkish; pistils > 15
Fruit blackberry-like, ± oblong, black, ± glabrous
Ecology: Common. Disturbed moist areas, roadsides, fencerows
Elevation: < 1600 m.
Bioregional distribution: California Floristic Province
Distribution outside California: to British Columbia; native to Eurasia
Synonyms: R. procerus Mueller
Favored by rats for food, shelter.