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, generally ± stellate-hairy
Leaves stipuled, petioled, deciduous; blade ovate to ± round in CA, generally palmately 3–7-lobed, lobes crenate to serrate
Inflorescence ± umbel-like, bracted
Flower: hypanthium bell-shaped, bractlets 0; sepals persistent; petals rounded, white; stamens 20–40; pistils 1–5, free or ± fused, ovary superior, style thread-like, stigma head-like
Fruit: follicles, inflated, often opening along both sutures
Seeds 2–4, ovoid; coat hard, shiny
Species in genus: ± 10 species: North America, Asia
Etymology: (Greek: bladdery fruit)


P. alternans (M.E. Jones) J.T. Howell

Plant 5–15 dm
Leaf: petiole 5–10 mm; blade 5–20 mm, generally densely hairy, lobes 3–7, generally crenate
Flower: sepals ± 3 mm; petals 3–4 mm; stamens alternately short and long; pistil generally 1
Fruit hairy
Ecology: Dry, rocky pinyon/juniper woodland
Elevation: 1800–3100 m.
Bioregional distribution: White and Inyo Mountains, n Desert Mountains
Distribution outside California: to Utah
Flowering time: Jun–Jul
Synonyms: subspp. annulatus J.T. Howell and panamintensis J.T. Howell
Horticultural information: TRY; DFCLT.
See the CNPS Inventory for information about endangerment and rarity.
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bioregional map for PHYSOCARPUS%20alternans being generated

Retrieve Jepson Interchange Index to Plant Names entry for Physocarpus alternans
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