TREATMENT FROM THE JEPSON MANUAL (1993) |
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©Copyright 1993 by the Regents of the University of California
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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 1many 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 80:686699; Rollins 1993 Cruciferae of Continental North America. Stanford Univ Press]
Family description, key to genera by Robert A. Price.CORONOPUS
WART or SWINE CRESS
Annual, biennial; odor often foul; hairs 0 or simple
Stems severalmany
Leaves entire to very deeply pinnately lobed; basal and lower cauline petioled; upper subsessile
Inflorescence from leaf axils, dense
Flower minute: sepals spreading; petals small or 0, white or purplish; stamens 2 or 4
Fruit of 2 nutlet-like halves, inflated except at septum, flat perpendicular to septum, sessile above receptacle, indehiscent; valves hardened, each ± surrounding 1 seed
Seed oblong to ± reniform; embryonic root at back of 1 cotyledon
Species in genus: ± 10 species: generally Medit, few n South America
Etymology: (Greek: crow foot, from leaf shape)
Introduced C. didymus (L.) Sm.
Annual
Stem prostrate to decumbent, much-branched, 2050 cm
Leaves many, ovate-oblong, very deeply pinnately lobed; lobes narrow, entire to dentate or dissected
Flower ± 0.5 mm; petals linear, white
Fruit: pedicel 1.52.5 mm
Chromosomes: 2n=32
Ecology: Common. Disturbed areas, gardens, fields
Elevation: < 2000 m.
Bioregional distribution: California
Distribution outside California: N.America; native to Eurasia
Flowering time: MarJul
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