|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.
Annual to shrub; odor resinous or 0
Leaves generally basal, odd-1-pinnate to 1-palmate or 1-ternate; leaflets ± toothed or lobed, terminal generally ± = lateral
Inflorescence: cyme, generally ± open; pedicels generally ± straight
Flower: hypanthium ± shallow; bractlets 5; sepals generally 5, ± triangular; petals generally 5, generally = or > sepals, generally ± widely obcordate, generally yellow; stamens generally 20; pistils generally many, styles generally jointed near tip
Species in genus: 200500 species: n temp
Etymology: (Latin: diminutive of powerful, for reputed medicinal value)
Reference: [Clausen, Keck, & Hiesey 1940 Carn Inst Wash Pub 520:26195]
P. anglica Laicharding is a waif from cultivated: stem trailing; pedicels 28 cm, slender; sepals and petals generally 4; leaflets 35.
Annual to short-lived perennial herb, rosetted from taproot, inconspicuously glandularSee the CNPS Inventory for information about endangerment and rarity.
Stem prostrate to decumbent, generally 1040 cm, spreading- to ascending-hairy
Leaves pinnate; basal generally 210 cm, leaflets 48 per side, overlapped, 310 mm, 28-lobed > 1/2 to midvein, lobes oblanceolate, ± hairy
Inflorescence many-flowered; pedicels generally ± recurved in fruit
Flower: hypanthium 2.55 mm wide; petals 35.5 mm, cream; filaments 11.5 mm, anthers ± 0.5 mm; styles 11.5 mm, ± tapered from rough-thickened base
Fruit 11.5 mm, veined, brown
Ecology: Receding shorelines
Elevation: 13002200 m.
Bioregional distribution: Modoc Plateau
Distribution outside California: to Washington, Nevada