Jepson Flora Project: Jepson Interchange    

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

  • Up-to-date information about California vascular plants is available from the Jepson eFlora.



Reed C. Rollins, except as specified

Annual to subshrub
Leaves generally basal and cauline, alternate, generally simple; stipules 0
Inflorescence: generally raceme
Flower bisexual; sepals 4, free; petals (0)4, free, generally white or yellow, often clawed; stamens generally (2,4)6, generally 4 long, 2 short; ovary 1, superior, chambers generally 2, septum membranous, connecting 2 parietal placentas, style 1, stigma simple or 2-lobed
Fruit: generally capsule ("silique") with 2 deciduous valves, sometimes breaking transversely or indehiscent
Seeds 1–many per chamber
Genera in family: 300+ genera, 3000+ species: worldwide, especially cool regions; some cultivated for food (especially Brassica, Raphanus ) and ornamental
Recent taxonomic note: Recently treated to include Capparaceae [Rodman et al. 1993 Ann Missouri Bot Gard 80:686–699; Rollins 1993 Cruciferae of Continental North America. Stanford Univ Press]
Family description, key to genera by Robert A. Price.


Annual, biennial, perennial herb; hairs simple, dense
Stem erect
Leaves basal, cauline, lobed
Inflorescence narrow, greatly elongating in fruit; bracts 0
Flower: sepals spreading, bases not or barely sac-like; petals obovate, clawed, pale yellow to white; stigma expanded
Fruit cylindric; beak abruptly swollen at base
Species in genus: 2 species: s Eur
Etymology: (C. Hirschfeldt, horticulturist, 1742–1792)


H. incana (L.) Lagr.-Fossat

Biennial, perennial herb, canescent
Stem branched from base and above, 2–10 dm
Leaves: basal rosetted, flat on ground, pinnately lobed, terminal lobe > lateral, ± crenate-dentate; cauline ± sessile, ± simple, not clasping stem
Fruit erect, appressed, 1–1.5 cm, glabrous; valves 3–7-veined; pedicel erect, 3–4 mm, stout, club-like, beak 3–6 mm, flat
Seeds 1 row per chamber, spheric, reddish brown
Chromosomes: 2n=14
Ecology: Roadsides, creek bottoms, disturbed areas
Elevation: < 1600 m.
Bioregional distribution: North Coast, Sierra Nevada Foothills, Great Central Valley, Central Western California, South Coast, Mojave Desert
Distribution outside California: native to Mediterranean
Synonyms: Brassica geniculata (Desf.) Ball; H. adpressa Moench

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