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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R. David Whetstone and T.A. Atkinson

Perennial to tree; hairs stellate (or scale-like, peltate)
Leaves cauline, alternate, simple or palmately compound, evergreen, petioled; stipules generally deciduous
Inflorescence: generally complex clusters, cymes, or flowers solitary (in axils, opposite leaves, or on a spur branch); whorl of bracts often subtends calyx (especially if petals 0)
Flower bisexual, radial; sepals 5, generally fused at base; petals 0 or 5, clawed, sometimes fused to filament tube; stamens 5 (sometimes alternate 5 staminodes), filaments fused below into tube; ovary superior, sometimes on a stalk that may be fused to filament tube, chambers generally 5, style 1
Fruit: capsule
Genera in family: 60 genera, 700 species: generally tropical, subtropical; some cultivated for ornamental (Fremontodendron ) or for drugs and food (Cola ; Theobroma , chocolate)
Reference: [Brizicky 1966 J Arnold Arbor 47:60–74]



Shrub, small tree
Stem decumbent to erect, 3–8 m; inner bark gelatinous; twig hairs very dense, stellate
Leaf often on a spur, ± ovate, generally with 3 main and few–many 2° lobes, otherwise entire; hairs generally denser on lower surface
Inflorescence: flowers generally solitary, opposite a leaf or on a spur; flower subtended by generally 3 sepal-like bracts
Flower > 25 mm wide, showy; sepals spreading, widely ovate to ± round, upper surfaces pitted between raised, hard, fused basal margins, tip awned or not; petals 0; filaments thick, fleshy, tube surrounding and ± = ovary, < style; ovary (and fruit) sessile
Fruit 2–4 cm, ovoid, bristly; chambers 2–3 seeded
Species in genus: 2 species: CA, AZ, Mex
Etymology: (John C. Frémont, explorer in West, 1813–1890)
Reference: [Kelman 1991 Syst Bot 16:3–20]


F. californicum (Torr.) Coville

Plant erect and branched near ground or decumbent
Leaf 1–5 cm; blade palmately to pinnately lobed, soft to leathery; stipules ± 2 mm
Flower ± 35–60 mm wide; sepals yellow, margins sometimes reddish (or orange, coppery, or reddish), pits silky-hairy
Ecology: Chaparral, oak/pine woodland, rocky ridges
Elevation: ± 400–2000 m.
Bioregional distribution: California Floristic Province
Distribution outside California: Arizona, Baja California

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bioregional map for FREMONTODENDRON%20californicum 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 Fremontodendron californicum
Retrieve dichotomous key for Fremontodendron
Overlay Consortium of California Herbaria specimen data by county on this map
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