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; hairs 0 or simple
Stem erect to ascending, slender; branches 0–many
Leaves simple, sessile, entire, dentate, or pinnately lobed
Inflorescence elongate; bracts 0
Flower: sepals ascending, bases not sac-like; petals white or purple; stamens 6, ± equal, ± exserted
Fruit generally elliptic to round, very flat, 1-chambered (septum 0), indehiscent; wing entire to lobed, often perforated; rays 0 to very distinct; pedicel very slender
Seed 1, smooth; embryonic root at edges of both cotyledons
Species in genus: 5 species: North America
Etymology: (Greek: fringe fruit)


T. curvipes Hook.

Stem 1.5–8 dm, branched or not; hairs generally below
Leaves (ob)lanceolate; basal, lower cauline ± petioled or not, 1.5–5(7) cm, dentate to shallowly lobed; middle and upper cauline sessile, entire to dentate, base lobed, clasping stem
Flower: sepals ± 1 mm, often purplish, margin white; petals ± = sepals, narrow, white or purple-tinged
Fruit 5–8 mm, elliptic to round, hairy or not; wing entire, wavy-margined, or crenate, often perforated; rays 0 or ± indistinct; pedicel recurved, 4–7 mm; style 0.5–1.5(2) mm, included in or exserted from sinus
Chromosomes: 2n=28
Ecology: Common. Slopes, washes, moist meadows
Elevation: < 1800 m.
Bioregional distribution: California Floristic Province, Desert
Distribution outside California: to British Columbia, Rocky Mtns, Baja California
Flowering time: Mar–May
Varieties elegans (Fisch. & C.A. Mey.) B.L. Rob., eradiatus Jeps., and longistylus Jeps. indistinct
Horticultural information: SUN, DRN: 6, 7, 8, 9, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24 &IRR: 1, 2, 3, 10, 11, 12.

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