Jepson Herbarium
		University of California, Berkeley

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Indexes to all accepted names and synonyms: | A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z |

Annual to shrub; sap pungent, watery.
Leaf: generally simple, alternate; generally both basal, cauline; stipules 0.
Inflorescence: generally raceme, generally not bracted.
Flower: bisexual, generally radial; sepals 4, generally free; petals (0)4, forming a cross, generally white or yellow to purple; stamens generally 6 (2 or 4), 4 long, 2 short (3 pairs of unequal length); ovary 1, superior, generally 2-chambered with septum connecting 2 parietal placentas; style 1, stigma entire or 2-lobed.
Fruit: capsule, generally 2-valved, "silique" (length >= 3 × width) or "silicle" (length < 3 × width), dehiscent by 2 valves or indehiscent, cylindric or flat parallel or perpendicular to septum, segmented or not.
Seed: 1–many, in 1 or 2 rows per chamber, winged or wingless; embryo strongly curved.
± 330 genera, 3780 species: worldwide, especially temperate. [Al-Shehbaz et al. 2006 Plant Syst Evol 259:89–120] Highest diversity in Medit area, mtns of sw Asia, adjacent c Asia, w North America; some Brassica species are oil or vegetable crops; Arabidopsis thaliana used in experimental molecular biology; many species are ornamentals, weeds. Aurinia saxatilis (L.) Desvaux in cultivation only. Aubrieta occasional waif in c NCoR, Carrichtera annua (L.) DC. in SCo, Iberis sempervirens L., Iberis umbellata L. in PR, Teesdalia coronopifolia (Bergeret) Thell., Teesdalia nudicaulis (L.) W.T. Aiton in s NCoRO, CCo. Cardaria, Coronopus moved to Lepidium; Caulostramina to Hesperidanthus; Guillenia to Caulanthus; Heterodraba to Athysanus; CA taxa of Lesquerella to Physaria; Malcolmia africana to Strigosella. —Scientific Editors: Douglas H. Goldman, Bruce G. Baldwin.

Key to Brassicaceae

Annual; hairs simple, or short-stalked with 2–4- rays.
Stem: simple or branched at base, leafy.
Leaf: basal not rosetted, short petioled, entire or dentate; cauline short-petioled or sessile, base not lobed, entire or dentate.
Inflorescence: 1-sided; bracts 0.
Flower: sepals erect, early- deciduous, base not sac-like; petals < to > sepals or rudimentary, white.
Fruit: silicle, reflexed, indehiscent or late- dehiscent, unsegmented, round or obovate to elliptic, flat parallel to septum, glabrous to hairy; pedicel recurved.
Seed: 1 or 6–12, in 1 row, flat, not winged.
2 species: w North America, nw Mex. (Greek: without fruit fringe)
Unabridged note: Jepson 1901 Fl W Calif:224 united Athysanus and Heterodraba under the former, thus establishing nomenclatural priority. The 2 genera are indistinguishable in every character except those in the key below. Molecular data support the placement of the combined genus near Draba and Arabis.

Stem: hairy; branched near base, prostrate to ascending, (3)7–25(35) cm.
Leaf: basal nearly sessile, 0.5–2.2 cm, oblanceolate to obovate or oblong, entire to each side 1-toothed; hairs 3–4-rayed; cauline 2–5, tapered at base.
Flower: sepals 0.6–1 mm; petals 1.3–1.7 mm.
Fruit: 3–5 mm, obovate to elliptic or round; style 0.1–0.2 mm; pedicel 1–2(3) mm.
Seed: 0.9–1.2 mm, plump, oblong.
Uncommon. Grassy, open slopes, flats, clay soils, floodplains, gypsum-clay slopes; 100–900 m. Cascade Range Foothills, s Sierra Nevada Foothills, Tehachapi Mountain Area, Great Central Valley, South Coast Ranges;

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Citation for the whole project: Jepson Flora Project (eds.) [year] Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html [accessed on month, day, year]
Citation for an individual treatment: [Author of taxon treatment] [year]. [Taxon name] in Jepson Flora Project (eds.) Jepson eFlora, [URL for treatment]. Accessed on [month, day, year].

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Bioregions in which taxon occurs	Red area (if present) is the part of the bioregion lying between the upper and lower elevation limits of the taxon; markers link to CCH specimen records. If the markers are obscured, reload the page [or change window size and reload]. Yellow markers indicate records that may have georeferencing or identification issues.
Chart based on elevation range in Manual and elevations and coordinates of CCH records. Data provided by the participants of the Consortium of California Herbaria. Note: About half of the CCH records include both elevation and coordinates.	Map made in collaboration with Scott Loarie. Data provided by the participants of the Consortium of California Herbaria. View all CCH records   CCH collections by month Duplicates counted once; synonyms included. Species do not include records of infraspecific taxa. Blue line denotes Manual flowering time.