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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.


Robert A. Price

Annual to perennial herb, often cushion- or mat-forming; hairs often branched
Leaves basal and sometimes cauline, entire or shallowly toothed
Flower: sepal bases equal; petals < 10 mm, yellow or white, claw and limb generally distinct
Fruit < 30 mm, generally lanceolate to ovate, generally flat parallel to septum, less often partially inflated, sometimes twisted or wavy
Seeds: 2 rows per chamber; wing generally 0
Species in genus: 350+ species: n hemisphere, mtns of South America
Etymology: (Greek: acrid)
Reference: [Rollins & Price 1988 Aliso 12:17–27]


D. corrugata S. Watson

Biennial to perennial herb
Stems 1–several from base, < 25 cm; hairs coarse, simple and forked
Leaves: hairs coarse, simple and forked; basal in dense cushion-like rosettes, 10–30 mm, oblanceolate, entire, grayish; cauline 0–15
Inflorescence 10–100+-flowered
Flower: petals 3–5 mm, yellow
Fruit 5–20 mm, (1.5)2–3(4) mm wide, elliptic, generally twisted; tip acute; hairs 0 or simple, forked, and stellate; style 1.5–3.5 mm
Seeds < 35, 1.2–1.6 mm; wings 0
Ecology: Slopes among rocks
Elevation: 2000–3800 m.
Bioregional distribution: San Gabriel Mountains, San Bernardino Mountains, Peninsular Ranges
Distribution outside California: Baja California


var. corrugata

Stem branched
Leaves: cauline 3–15, often crowded
Fruits densely clustered
Ecology: Habitats and elevations of sp.
Bioregional distribution: San Gabriel Mountains, San Bernardino Mountains. Plants with fruits more finely, densely hairy have been called forma vestita (Davidson) C.L. Hitchc.

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