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 to subshrub [ shrub]; hairs sessile, appressed, 2–5(8)-rayed.
Leaf: basal rosetted, petioled, entire, dentate, or pinnately lobed; cauline sessile or petioled, bases not lobed.
Inflorescence: elongated.
Flower: sepals oblong to linear, erect, base of lateral pair sac-like or not; petals clawed, yellow or orange (white, purple, or brown).
Fruit: silique, dehiscent, linear, cylindric, 4-sided, or flat parallel or perpendicular to septum, unsegmented; stigma entire or 2-lobed.
Seed: 15–100, in 1 or 2 rows, plump or flattened, oblong, winged or not.
± 150 species: North America, Eurasia, n Africa. (Greek: to help or save, from alleged medicinal properties of some species) [Rossbach 1958 Madroño 14:261–267] Fls, fruit, basal leaves needed for identification. All native CA taxa related to Erysimum capitatum; hybridization blurs limits of some species
Unabridged references: [Rollins 1993 Cruciferae of continental North America. Stanford Univ Press.]

Annual.
Stem: (0.4)1.5–4.5(7) dm.
Leaf: (2)5–12(17) mm wide, linear to narrowly oblanceolate or oblong, wavy, dentate or shallowly wavy, flat, hairs 2(3)-rayed.
Flower: sepals 4–8 mm; petals 6–8 mm, 1.5–2 mm wide, light yellow, claw 3–8 mm.
Fruit: (2)3–8(10) cm, 1.5–2 mm wide, 4-angled, ± constricted between seeds; valves outside with 2(3)-rayed hairs, inside glabrous or occasionally sparsely hairy, midvein distinct; style 1–4 mm; pedicel spreading, 2–4(6) mm, ± as wide as fruit.
Seed: (40)50–80(90), 1–1.5 mm, oblong; wing 0 (tip winged).
2n=16. Disturbed areas, fields; < 2100 m. n&c San Joaquin Valley, Modoc Plateau;

Previous taxon: Erysimum perenne
Next taxon: Erysimum suffrutescens

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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	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 provide evidence for eFlora range revision or 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.	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.