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.

TEESDALIA

Annual, generally scapose; hairs 0 or simple
Leaves rosetted, petioled, generally dissected; cauline 0 or few, sessile
Flower: sepals glabrous; petals not clawed, white; stamens 4 or 6, filaments with a white basal scale
Fruit ± round, flat perpendicular to septum, winged above, dehiscent; pedicel flared to cup-like tip; styles short or 0
Seeds 2 per chamber; wing 0
Species in genus: 2 species: Eur
Etymology: (R. Teesdale, English botanist, horticulturist, 1740–1804)

Introduced

T. coronopifolia (Bergeret) Thell.

Plant slender, glabrous
Leaf 1–5 cm, narrowly oblanceolate, pinnately few-lobed to entire
Inflorescence dense; peduncles erect or ascending, 1–several, 6–16 cm
Flower: sepals widely ovate; petals ± equal, narrowly obovate or tongue-shaped; stamens 4
Fruit 3–4 mm, widely obovate to obcordate; tip shallowly notched; pedicel ± ascending to ± reflexed; style 0
Chromosomes: 2n=36
Ecology: Uncommon. Wet, disturbed areas
Elevation: < 100 m.
Bioregional distribution: s Outer North Coast Ranges (Sonoma Co.)
Distribution outside California: native to Europe

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