Jepson Flora Project: Jepson Interchange    

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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

Shrub, unarmed
Leaves elliptic to (ob)ovate, generally serrate, deciduous; stipules generally 0; petiole 0–short
Inflorescence: raceme or panicle, many-flowered, bracted; bractlet generally 1 at top of pedicel, generally linear
Flower: hypanthium obconic to bell-shaped; sepals spreading to erect; petals spreading, white to rose; stamens 15–many; pistils 5, opposite petals, free or fused at base, surrounded by hypanthium, ovaries superior, styles ± terminal, beak-like in fruit, stigmas head-like
Fruit: follicles 5, dehiscent along inner suture and top of outer
Seeds ± fusiform; coats membranous
Species in genus: ± 50 species: n temp
Etymology: (Greek: shrub)
Reference: [Henrickson 1985 Aliso 11:199–211]


S. densiflora Torr. & A. Gray

Plant 2–9 dm, glabrous to finely and sparsely hairy
Leaf generally 1–7 cm; petiole < 3 mm; blade surfaces similar
Inflorescence generally wider than long, ± flat-topped
Flower: hypanthium 2–2.5 mm; sepals ± 1 mm, spreading to erect; petals ± 1.5 mm, rose
Ecology: Moist, rocky areas including serpentine, coniferous forests
Elevation: 600–3400 m.
Bioregional distribution: Klamath Ranges, Cascade Range, High Sierra Nevada
Distribution outside California: to British Columbia
Plants with young herbage finely hairy have been called subsp. splendens (Baumann) Abrams
Horticultural information: IRR, DRN: 1, 4, 5, 6, 17 &SHD: 2, 7, 14, 15, 16, 18, 19, 20, 21.

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