Jepson Flora Project: Jepson Interchange    

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

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

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.

THYSANOCARPUS

LACEPOD, FRINGEPOD

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)

Native

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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