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Key to families | Table of families and genera
Indexes to all accepted names and synonyms:
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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 Mediterranean area, mountains of southwestern Asia, adjacent central Asia, western 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 central North Coast Ranges, Carrichtera annua (L.) DC. in South Coast, Iberis sempervirens L., Iberis umbellata L. in Peninsular Ranges, Teesdalia coronopifolia (Bergeret) Thell., Teesdalia nudicaulis (L.) W.T. Aiton in southern Outer North Coast Ranges, Central Coast. Cardaria, Coronopus moved to Lepidium; Caulostramina to Hesperidanthus; Guillenia to Caulanthus; Heterodraba to Athysanus; California taxa of Lesquerella to Physaria; Malcolmia africana to Strigosella. —Scientific Editors: Douglas H. Goldman, Bruce G. Baldwin.
Key to Brassicaceae
Annual to perennial herb, glabrous or hairs simple (forked). Leaf: basal rosetted or not, petioled, entire, dentate or pinnately lobed, generally deciduous; cauline petioled, or sessile with bases lobed or sagittate. Inflorescence: elongated. Flower: calyx urn-shaped or cylindric, sepals erect (spreading), base sac-like or not; petals yellow, purple, brown, or white, generally channeled, margin wavy or not; stamens in 3 pairs of equal length, or 4 long and 2 short, (all equal), free or filaments of longer pair(s) fused. Fruit: silique, linear, dehiscent, unsegmented, ± sessile, cylindric (flat perpendicular or parallel to septum); stigma entire or 2-lobed. Seed: 24–210, 1 row per chamber, oblong to ovate (± spheric), plump, wing 0.Key to Caulanthus
17 species: southwestern United States, northwestern Mexico. (Greek: stem flower, in reference to insertion of flowers along stem)
Annual, glabrous or sparsely to densely stiff-hairy. Stem: erect, 7–12 dm, simple or branched distally. Leaf: basal lyre-shaped to pinnately lobed, early-deciduous; proximal cauline, petioled, 2–13.5 cm, lanceolate to oblong or oblanceolate; distal sessile. Inflorescence: terminal sterile flower cluster 0. Flower: sepals spreading to erect, 6–9 mm, cream to pale yellow or purple; petals 7–13 mm, channeled, wavy-margined, white or cream (± pink); stamens 4 long, 2 short. Fruit: ascending to reflexed, 3.8–7.7 cm, 1.4–2 mm; style 1–3.5 mm, stigma ± entire; pedicel ascending to strongly reflexed, 4.5–8 mm. Seed: 44–58, 1.3–1.8 mm, oblong.
2n=28. Dry, exposed slopes, generally on serpentine, open hillsides; 80–750 m. s Inner North Coast Ranges, Sacramento Valley (Montezuma Hills), se San Francisco Bay Area, Inner South Coast Ranges. [Guillenia flavescens (Hook.) Greene] Mar–May [Online Interchange]
Unabridged synonyms: [Streptanthus flavescens Hook.; Thelypodium flavescens (Hook.) S. Watson]
Previous taxon: Caulanthus crassicaulis
Next taxon: Caulanthus glaucus
Citation for the whole project: Jepson Flora Project (eds.) 2013. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on Apr 17 2014
Citation for this treatment: [Author of taxon treatment] 2012. Caulanthus, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=18399, accessed on Apr 17 2014
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