|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, generally ± glandular, generally resinous-smelling; caudex generally branched
Stem generally ascending to erect
Leaves generally basal, odd-1-pinnate, generally ± flat; cauline alternate, reduced upward; uppermost lateral leaflets generally ± fused with terminal
Inflorescence: cyme, open or of dense clusters; pedicels generally straight
Flower: hypanthium a ± flat-bottomed cup, width ± 2 X length; bractlets 5, generally 2/3 sepals; sepals 5, often reflexed; petals 5, generally ± = sepals, blunt, white; stamens 10, filaments flat, often forming a tube; pistils 2many, ovaries superior, styles jointed below fruit tip, ± thicker at base
Species in genus: 19 species: w North America
Etymology: (J. Horkel, German plant physiologist, 17691846)
Data apply to basal leaves, pressed hypanthia.
Plant clumped, green
Stem 10120 cm
Leaf 540 cm; leaflets 39 per side, generally ± separated, 560 mm, ± ovate to round, unevenly toothed and lobed (teeth generally > 20), ± hairy
Inflorescence open, of fewmany separate flowers and few-flowered clusters; pedicels generally 120 mm
Flower: hypanthium width 410 mm, 12 X length; bractlets ± 46 mm, generally ± 2 mm wide, ovate, often toothed; sepals generally 46 mm; petals 38 mm, generally ± oblanceolate to elliptic; filaments 0.53 mm, bases 0.21.5 mm wide, anthers 0.81.8 mm; pistils generally > 50, styles 24 mm
Fruit ± 1 mm
Ecology: Open scrub, n slopes, streambanks
Elevation: < 1600 m.
Bioregional distribution: North Coast, North Coast Ranges, Sierra Nevada Foothills, Central Western California, San Bernardino Mountains.Often confused with Potentilla glandulosa (terminal leaflets distinct). Sspp. intergrade
Reference: [Ertter 1992 Phytologia 71:420422]
Leaf 1040 cm; sheathing bases ± hairy; leaflets generally 34 per side, 1560 mm, ± evenly double-toothed < 1/4 to base, generally unlobed; terminal leaflet 2090 mm
Flower: hypanthium inner wall glabrous; sepals not red-mottled inside; filaments 12 mm, bases 0.51.5 mm wide; styles 23 mm
Ecology: Coastal scrub, canyons, poison-oak thickets
Elevation: 10400 m.
Bioregional distribution: Central Western California
Synonyms: H. frondosa (Greene) Rydb
Horticultural information: DRN, IRR: 5, 17 &SHD: 14, 15, 16, 22, 23, 24.