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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
Perennial herb with caudex (annual or biennial); hairs stellate, ± sessile. Stem: erect to decumbent or prostrate, simple or branched distally. Leaf: basal generally rosetted, simple, entire to wavy or dentate (pinnately lobed); cauline petioled or sessile, entire to wavy or dentate, base not lobed. Flower: sepals oblong to ovate, erect or spreading, sac-like at base; petals yellow (white or ± purple), widely ovate to spoon-shaped, clawed or not. Fruit: silicle, dehiscent, spheric to ovoid, ellipsoid, oblong, or spectacle-shaped, inflated and bladdery or not, unsegmented, generally not flattened (flattened); stigma entire. Seed: 4–28(40), in 2 rows, wingless (narrowly winged).Key to Physaria
105 species: western North America, South America. (Greek: bladder, from inflated fruit) [Al-Shehbaz & O'Kane 2002 Novon 12:319–329]
Unabridged references: [Rollins & Shaw 1973 Harvard Univ Press:1–228]
Densely hairy. Stem: prostrate to decumbent or erect, generally simple, 0.3–1.5(3) dm. Leaf: basal 1–8 cm, ± round to obovate or elliptic, margin wavy-dentate to entire; cauline 0.5–1.5(2.5) cm, oblanceolate, entire or sparsely dentate, proximal short-petioled, distal sessile. Flower: sepals 4.5–7 mm; petals 7–9(14) mm, spoon-shaped, yellow. Fruit: (5)6–9 mm, ellipsoid to obovoid, strongly compressed parallel to septum, acute at tip, densely hairy outside, sparsely hairy inside or glabrous; style (2)3–6.5 mm, generally sparsely hairy; pedicel 5–10(15) mm. Seed: 4–16, ovoid to ellipsoid.
2n=10. Gravelly soils, talus, ridges, barren hillsides, volcanic rocks, decomposed limestone, schist; 600–3350 m. Klamath Ranges, High North Coast Ranges, High Cascade Range, n High Sierra Nevada, Modoc Plateau; to Washington, Idaho, Nevada. [Lesquerella occidentalis (S. Watson) S. Watson subsp. occidentalis] Physaria occidentalis subsp. cinerascens (Maguire & A.H. Holmgren) O'Kane & Al-Shehbaz in Nevada, Utah. Apr–Aug [Online Interchange]
Unabridged synonyms: [Lesquerella cusickii M.E. Jones]
Previous taxon: Physaria ludoviciana
Next taxon: Physaria tenella
Citation for the whole project: Jepson Flora Project (eds.) 2013. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on Mar 10 2014
Citation for this treatment: [Author of taxon treatment] 2012. Physaria, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=89270, accessed on Mar 10 2014
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