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, biennial, perennial herb, low, ± fleshy, glabrous, taprooted
Leaves simple, thick
Flower: petals obovate to wedge-shaped, white, yellowish, or purplish
Fruit ± inflated, flat perpendicular to septum, sessile above receptacle, opening from base; valves 1-veined; stigma head-like
Seeds 2 rows per chamber; embryonic root at edges of both cotyledons
Species in genus: ± 20 species: generally n coasts
Etymology: (Latin: spoon, from basal leaves of some species)


C. officinalis L. var. arctica (DC.) Gelert


Stem spreading to erect, (0.5)1–3 dm
Leaves: basal rosetted, blades << petioles, bases truncate or tapered; upper cauline sessile, entire to obscurely dentate
Fruit 3–7 mm, longer than wide, ovate to obovate; pedicel erect or generally ascending, 5–15 mm; style < 0.5 mm
Chromosomes: 2n=14
Ecology: Seabird nesting areas on offshore rocks
Elevation: < 50 m.
Bioregional distribution: n North Coast (Del Norte Co.)
Distribution outside California: to Alaska
Synonyms: C. groenlandica L. misapplied
See the CNPS Inventory for information about endangerment and rarity.
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bioregional map for COCHLEARIA%20officinalis%20var.%20arctica 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 Cochlearia officinalis var. arctica
Retrieve dichotomous key for Cochlearia
Overlay Consortium of California Herbaria specimen data by county on this map
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