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 generally compound, alternate, stipuled; leaflets generally entire
Inflorescence: generally raceme, spike, umbel or head; flowers sometime 1–2 in axils
Flowers generally bisexual, generally bilateral; hypanthium generally flat or cup-like; sepals generally 5, fused; petals generally 5, free, or the 2 lower ± fused; stamens 1–many, often 10 with 9 filaments at least partly fused, 1 (uppermost) free; pistil 1, ovary superior, generally 1-chambered, ovules 1–many, style, stigma 1
Fruit: legume, sometimes including a stalk-like base above receptacle, dehiscent, or indehiscent and breaking into 1-seeded segments, or indehiscent, 1-seeded, and achene-like
Seeds 1–several, often ± reniform, generally hard, smooth
Genera in family: ± 650 genera, 18,000 species: worldwide; with grasses, requisite in agriculture and most natural ecosystems. Many cultivated, most importantly Arachis , peanut; Glycine , soybean; Phaseolus , beans; Medicago ; Trifolium ; and many orns
Reference: [Polhill & Raven (eds) 1981 Advances in legume systematics; Allen & Allen 1981 Leguminosae]
Family description and key to genera by Duane Isely.



Elizabeth McClintock

Shrub, small tree, unarmed
Stems generally ribbed or angled, persistently green
Leaves ternately 1-compound, alternate, petioled; stipules fused to leaf bases, rarely 0
Inflorescence: racemes or heads, terminal or axillary, or clusters on axillary short-shoots
Flower bilateral; calyx generally < corolla, 2-lipped, upper lip strongly 2-lobed, lobes ± 1/3 tube, lower lip 3-lobed, lobes < upper lobes; petals 5, yellow, banner generally ovate or rounded, outside generally glabrous or variously hairy, keel narrow-oblong, ± straight on lower surface, often hairy; stamens 10, filaments fused; style ± abruptly bent at tip
Fruit dehiscent, narrow-oblong, slightly inflated or not; pedicel < 7 mm
Seeds several, generally arilled
Species in genus: 87 species: Eur, w Asia, n Africa, Canary Islands
Etymology: (Latin: from planta genista , from which English Plantagenet monarchs took their name)
Reference: [Gibbs & Dingwall 1971 Bol Soc Brot 45:269–316]
Most naturalized CA plants are hybrids involving G. canariensis, G. monspessulana, G. stenopetala.


G. stenopetala Webb & Berthel.

Shrub < 6 m
Stem: twigs silvery-hairy when young, becoming glabrous
Leaf: stipules 1–3 mm, deciduous; petiole 5–20 mm; leaflets generally 10–40 mm, oblanceolate to narrow-elliptic, length generally 3 X width, both surfaces ± glabrous or lower sparsely silky-hairy
Inflorescence: racemes 5–10 cm, terminal or axillary; flowers 10–30, terminal generally opening first; pedicels 2–4 mm
Flower: calyx 4–7 mm, silky-hairy; banner 10–15 mm, ovate, ± notched at tip, glabrous or ± hairy only on midrib
Fruit 20–35 mm, silky-hairy
Ecology: Uncommon. Disturbed places
Elevation: < 200 m.
Bioregional distribution: Outer South Coast Ranges
Distribution outside California: native to Canary Islands
Synonyms: Cytisus s. (Webb & Berthel.) Christ

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bioregional map for GENISTA%20stenopetala 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 Genista stenopetala
Retrieve dichotomous key for Genista
Overlay Consortium of California Herbaria specimen data by county on this map
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