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; hairs simple
Leaves simple, petioled, ± ovate, dentate
Inflorescence: bracts 0 or subtending lower flowers, leaf-like
Flower: sepals erect, inner pair sac-like at base; petals long-clawed, bluish or lilac to purplish, rarely white; stamens 6
Fruit widely elliptic to round, very flat parallel to septum, long-stalked above receptacle; valves falling; style ± beak-like
Seeds 2 rows per chamber, very flat, winged; stalks fused to septum; embryonic root at edges of both cotyledons
Species in genus: 3 species: Eur
Etymology: (Latin: moon, from shiny septum)


L. annua L.

Annual, biennial
Stem 5–10 dm, branched
Leaves: basal clustered; lower cauline petioled, upper sessile, blades 4–10 cm, bases cordate or reniform to rounded, upper clasping stem
Flower: petals ± 2 cm, bluish purple
Fruit 3.5–4.5 cm, oblong-ovate to ± round; stalk above receptacle 7–12 mm; style 6–8 mm, beak-like
Seeds 3–5 per chamber, (5)7–9 mm wide
Ecology: Disturbed areas, roadsides, urban areas
Elevation: < 200 m.
Bioregional distribution: San Francisco Bay Area, South Coast, expected elsewhere
Distribution outside California: native to Europe

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bioregional map for LUNARIA%20annua 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 Lunaria annua
Retrieve dichotomous key for Lunaria
Overlay Consortium of California Herbaria specimen data by county on this map
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