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.

CONRINGIA

HARE'S EAR

Annual, perennial herb, glabrous, generally glaucous
Stem erect
Leaves: basal generally entire, ± fleshy; cauline lanceolate or oblong to ± round, base cordate, clasping stem
Inflorescence ± flat-topped; bracts 0
Flower: outer 2 sepals linear to narrowly oblong, inner 2 wider; petals yellow or white
Fruit linear; stigma head-like, entire or 2-lobed
Seeds: 1 row per chamber, oblong, plump; wing 0; embryonic root at back of 1 cotyledon or twisted
Species in genus: 6 species: Eurasia
Etymology: (H. Conring, professor at Helmstedt, Germany, 1606–1681)

Introduced

C. orientalis (L.) Dumort.

Annual
Stem 3–7 dm, generally simple
Leaves: basal 5–9 cm, oblanceolate to obovate, narrowed to base, ± entire; cauline sessile, oblong-lanceolate
Flower: sepals erect, 6–8 mm, acute; petals 7–12 mm, lemon to creamy yellow, claws slender
Fruit 8–13 cm, ± beaded, 4-angled to ± cylindric; pedicel ascending, 10–15 mm; style ± 1 mm, thick
Chromosomes: 2n=14
Ecology: Fields, roadsides, open, disturbed places
Elevation: < 900 m.
Bioregional distribution: South Coast, East of Sierra Nevada, Sonoran Desert, expected elsewhere
Distribution outside California: c US; native to Eurasia
Flowering time: Apr–Jun

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