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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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.


Annual to perennial herb; hairs simple, generally glandular and not
Leaves entire to pinnately lobed; basal not rosetted
Inflorescence: bracts 0
Flower: inner sepals sac-like at base; petals purplish blue to white or yellow; anthers ± exserted
Fruit cylindric, sessile above receptacle, tapered to sharp beak, indehiscent but breaking into 1-seeded segments
Seeds: 1 row per chamber, ± flat, embedded in cavities of septum; embryonic root at edges of both cotyledons
Species in genus: ± 12 species: Eurasia
Etymology: (Latin: from breaking between seeds)


C. tenella (Pall.) DC.

Stem 1–5 dm, branched from near base
Leaves elliptic-oblong to lanceolate or oblanceolate; basal and lower cauline petioled, blades 3–8 cm, wavy-dentate to pinnately lobed; upper cauline sessile, ± entire to dentate
Flower: sepals erect, 6–8 mm, free but forming a tube; petals narrowly clawed, magenta
Fruit spreading to ascending, 35–45 mm, lanceolate, often upcurved; beak 7–20 mm; pedicel ascending, 2–4 mm, stout; style 0, stigma minute, entire
Chromosomes: 2n=14
Ecology: Grainfields, roadsides, waste places
Elevation: < 1300 m.
Bioregional distribution: Cascade Range, Great Central Valley, South Coast, Great Basin Floristic Province
Distribution outside California: widespread to c US; native to Europe

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bioregional map for CHORISPORA%20tenella being generated
YOU CAN HELP US make sure that our distributional information is correct and current. If you know that a plant occurs in a wild, reproducing state in a Jepson bioregion NOT highlighted on the map, please contact us with that information. Please realize that we cannot incorporate range extensions without access to a voucher specimen, which should (ultimately) be deposited in an herbarium. You can send the pressed, dried collection (with complete locality information indicated) to us (e-mail us for details) or refer us to an accessioned herbarium specimen. Non-occurrence of a plant in an indicated area is difficult to document, but we will especially value your input on those types of possible errors (see automatic conversion of distribution data to maps).

Retrieve Jepson Interchange Index to Plant Names entry for Chorispora tenella
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