TREATMENT FROM THE JEPSON MANUAL (1993) |
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©Copyright 1993 by the Regents of the University of California
For up-to-date information about California vascular plants, visit the Jepson eFlora. |
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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
Inflorescence various
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.
Introduced |
Arched to erect brambles, ± nonglandular
Stem 510 mm diam, 5-angled; prickles many, ± wide-based, generally ± curved
Leaf compound; stipules linear; petiole ± 39 cm; leaflets 35, ± ovate-elliptic, sharply toothed, green below; longest leaflet stalk ± 1030 mm; longest leaflet blade ± 612 cm
Inflorescence: raceme, generally 510-flowered; bracts often leaf-like
Flower: sepal tips 18 mm; petals 1020 mm, obovate-round, white; pistils generally > 15
Fruit blackberry-like, ± oblong, black, glabrous
Ecology: Disturbed areas
Elevation: < 1500 m.
Bioregional distribution: California Floristic Province
Distribution outside California: native to e N.America
Synonyms: R. almus (L.H. Bailey) L.H. Bailey
Glandular R. allegheniensis Porter of e North America a scattered waif in CA.