Jepson Flora Project: Jepson Interchange    

 
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Jepson Interchange (more information)
©Copyright 1993 by the Regents of the University of California
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ROSACEAE

ROSE FAMILY

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.

PYRACANTHA

FIRETHORN

Thomas J. Rosatti

Shrub, ± evergreen; thorns often leafy or branched
Leaf: stipules soon deciduous; petiole short
Inflorescence: racemes or panicles at ends of short lateral branches
Flower bisexual; bractlets on hypanthium 0; sepals persistent; petals whitish; stamens 20, fused at base; ovary half-inferior, chambers 5
Fruit: pome, ± spheric, open at top; stones 5, free, 1–2-seeded
Species in genus: ± 6 species: Medit, Asia
Etymology: (Greek: fire thorn, from fruit color, thorns)

Introduced

P. angustifolia (Franchet) C.K. Schneid.

Plant < 4 m, prostrate to generally erect, ± gray-tomentose (sometimes becoming glabrous)
Leaf 25–50 mm, generally ± oblanceolate, generally rolled under; teeth 0–few, generally distal, inconspicuous
Inflorescence ± several-flowered
Fruit 6–8 mm, yellow-orange to red
Ecology: Disturbed areas, abandoned fields, roadsides
Elevation: < 200 m.
Bioregional distribution: s Outer North Coast Ranges, Central Coast, San Francisco Bay Area, South Coast, expected elsewhere
Distribution outside California: native to China

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bioregional map for PYRACANTHA%20angustifolia being generated
 
YOU CAN HELP US make sure that our distributional information is correct and current. If you know that a plant occurs in a wild, reproducing state in a Jepson bioregion NOT highlighted on the map, please contact us with that information. Please realize that we cannot incorporate range extensions without access to a voucher specimen, which should (ultimately) be deposited in an herbarium. You can send the pressed, dried collection (with complete locality information indicated) to us (e-mail us for details) or refer us to an accessioned herbarium specimen. Non-occurrence of a plant in an indicated area is difficult to document, but we will especially value your input on those types of possible errors (see automatic conversion of distribution data to maps).

Retrieve Jepson Interchange Index to Plant Names entry for Pyracantha angustifolia
Retrieve dichotomous key for Pyracantha
Overlay Consortium of California Herbaria specimen data by county on this map
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