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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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.


Margriet Wetherwax

Shrub, ± resinous
Stem: bark shredding
Leaves simple, alternate or clustered, evergreen, short-petioled, stipuled or not, ± linear, stiff
Inflorescence: panicle, terminal, 4–15 cm; bracts generally < calyx, ± lanceolate
Flower: hypanthium 1–1.5 mm, ± = sepals, obconic, persistent, enclosing fruit; calyx lobes 1–1.5 mm; corolla lobes ± round, cream to white; stamens 10–15 in clusters alternate petals; ovary superior, chamber 1, ovules 1–2
Fruit: achene
Species in genus: 2 species: CA, Baja CA
Etymology: (Greek: glandular mouth, from hypanthium glands)


A. fasciculatum Hook. & Arn.


Shrub < 4 m, burled, much-branched
Stem: trunk bark gray-brown; twigs glabrous to hairy
Leaves 4–10 mm, clustered; stipules minute
Inflorescence 4–12 cm, dense; bracts linear to lanceolate, green; pedicels 0
Flower: hypanthium strongly 10-ribbed, throat glandular; corolla lobes ± 1.5 mm; ovary obliquely truncate
Chromosomes: 2n=18
Ecology: Dry slopes, ridges, chaparral
Elevation: < 1600 m.
Bioregional distribution: s North Coast Ranges, Sierra Nevada, Central Western California, Southwestern California
Distribution outside California: Baja California
Plants from sw PR, sw SCo, with ± puberulent twigs, leaves < 6 mm, have been called var. obtusifolium S. Watson
Horticultural information: DRN, SUN, DRY: 7, 8, 9, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24; CVS: GRCVR.

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bioregional map for ADENOSTOMA%20fasciculatum 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 Adenostoma fasciculatum
Retrieve dichotomous key for Adenostoma
Overlay Consortium of California Herbaria specimen data by county on this map
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