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Key to families | Table of families and genera

Specimen numbers are hyperlinked to records in the Consortium of California Herbaria data view where possible. Taxa are hyperlinked to entries in the Jepson Interchange via the "[Online Interchange]" link.

 

CYTISUS
Shrub, [small tree], unarmed. Stem: often ribbed, green, to 5 m. Leaf: 1-compound (generally ternate), generally alternate, petioled; stipules free or 0. Inflorescence: generally terminal racemes, or axillary, peduncled clusters of 1–4(7) flowers. Flower: calyx bell-shaped to cylindric, 2-lipped, upper lip ± 2-lobed, lower generally 3-lobed; petals 5, generally yellow or white, generally not hairy, keel oblong-sickle-shaped to ± 1/2 circular (curve abaxial), claw ± 1/4 keel; stamens 10, filaments fused; style generally abruptly curved at ± middle or gently curved ± throughout. Fruit: dehiscent, generally oblong, papery to ± leathery; pedicel short. Seed: few to many, generally arilled.
65 species: Europe, western Asia, northern Africa, Canary Islands; some cultivated. (Greek: name for several woody Fabaceae) Chamaecytisus (30 species) often segregated but recent work (Cristofolini 1991 Webbia 45:187–219; Cubas et al. 2002 Plant Syst Evol 233:223–244) supports treatment as 1 monophyletic group.
Unabridged references: [Polhill 1976 Bot Syst 1:143–368]

Key to Cytisus

1. Corolla generally white, with dark or purple lines or spots or not; banner < 10 or 10–15 mm

2. Banner < 10 mm; leaflets < 10 mm ..... C. multiflorus

2' Banner 10–15 mm; leaflets 10–30 mm ..... C. proliferus

1' Corolla pale or golden yellow; banner generally > 10–25 mm

3. Calyx glabrous; fruit flat, glabrous except margin; branches generally 5-angled ..... C. scoparius

3' Calyx appressed-hairy; fruit ± inflated, densely white-hairy; branches generally 8–10-angled ..... C. striatus

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Citation for the whole project: Jepson Flora Project (eds.) [year] Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html [accessed on month, day, year]
Citation for an individual treatment: [Author of taxon treatment] [year]. [Taxon name] in Jepson Flora Project (eds.) Jepson eFlora, [URL for treatment]. Accessed on [month, day, year].
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