TREATMENT FROM THE JEPSON MANUAL	previous taxon | next taxon Jepson Interchange (more information)
	©Copyright 1993 by the Regents of the University of California Print edition is available from the University of California Press

	The second edition of The Jepson Manual (2012) is available from the University of California Press
	See also the Jepson eFlora, which parallels the Second Edition

BRASSICACEAE

MUSTARD FAMILY

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.

DRABA

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]

Native

D. breweri S. Watson

Perennial
Stems generally several from base, < 15 cm; hairs dense, stellate
Leaves: basal 5–15 mm, oblanceolate to obovate, generally whitened, hairs dense, stellate, main axis obscure (branches again branched); cauline 1–10, generally entire
Inflorescence < 30-flowered, elongate; lower pedicels generally < 3 mm, appressed, not bracted
Flower: petals 2–4 mm, white
Fruit 4–10 mm, ± lanceolate, generally twisted; hairs > 3-branched, stellate; style < 0.5 mm
Seeds < 35, 0.6–1 mm; wings 0
Ecology: Open, rocky areas, generally above timberline
Elevation: > 2500 m.
Bioregional distribution: High Cascade Range, High Sierra Nevada, n East of Sierra Nevada, White and Inyo Mountains
Distribution outside California: Nevada
Flowering time: Jul–Aug

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Retrieve Jepson Interchange Index to Plant Names entry for Draba breweri
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