Jepson Flora Project: Jepson Interchange    

 
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Jepson Interchange (more information)
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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.

MALCOLMIA

Annual, perennial herb; hairs simple or generally branched
Stem prostrate to erect, generally branched
Leaf simple to 2-pinnate
Inflorescence bracted or not
Flower: sepals erect, inner pair generally sac-like at base; petals prominently clawed, reddish or purple, rarely white
Fruit linear, sessile above receptacle, dehiscent; style tapered or 0; stigma lobes decurrent, generally fused
Seeds many, 1 row per chamber; margins 0
Species in genus: ± 35 species: s Eurasia, n Africa
Etymology: (W. Malcolm, London nurseryman, 1769–1820)

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