|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, glandular; odor resinous
Leaves generally basal, odd-1-pinnate, generally ± cylindric; cauline reduced; leaflets generally overlapped, generally divided ± to base
Flower: hypanthium shallow or deep; bractlets (0)5, generally < sepals; sepals generally 5; petals generally 5, acute to rounded; stamens generally < or = 20; pistils 1many, ovaries superior, style jointed below fruit tip, base ± rough-thickened
Species in genus: 30 species: w North America
Etymology: (E. Ives, Yale Univ. pharmacologist, 17791861)
Reference: [Ertter 1989 Syst Bot 14:231244]
Lf and leaflet data are for basal leaves.
Plant tufted, greenish or white-hairy; caudex 0few-branched
Stem decumbent to erect, 1545 cm
Leaf 1020 cm; sheathing bases densely strigose; leaflets 2035 per side, lobes < 5, 315 mm, elliptic to oblanceolate; cauline leaves 38
Inflorescence open; clusters many, 1020 mm wide, ± head-like, ± 520-flowered; pedicels generally < 3 mm (except lowest), straight
Flower 515 mm wide; hypanthium length < or = width; petals 27 mm, oblanceolate to obovate, yellow, < to > sepals; stamens generally 20; pistils 27
Fruit 23 mm, smooth, brown
Ecology: Dry, rocky meadows, generally volcanic soils
Elevation: 15002300 m.
Bioregional distribution: n High Sierra Nevada, s Modoc Plateau
Distribution outside California: w Nevada
See the CNPS Inventory for information about endangerment and rarity.
Stem generally ascending to erect
Inflorescence: clusters generally > 10-flowered
Flower: hypanthium 23 mm wide; petals 23 mm, oblanceolate; filaments 11.5 mm; styles ± 2.5 mm
Ecology: Habitats of sp.
Elevation: 15002300 m.
Bioregional distribution: n High Sierra Nevada (except Dog Valley), s Modoc Plateau.With I. sericoleuca near Beckwith, Sierra Valley
Horticultural information: In cultivation.