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Key to families | Table of families and genera
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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 [perennial herb]; hairs 0 or mixture of simple and branched. Leaf: basal rosetted or not, pinnately lobed, dentate, or entire, petioled or sessile, bases not lobed. Inflorescence: open. Flower: sepals spreading or reflexed, not sac-like at base; petals not clawed. Fruit: silicle, ovate to elliptic, flat perpendicular to septum, dehiscent, unsegmented; stigma entire. Seed: 10–24, generally in 2 rows; wings 0.
3 species: Eurasia. (E.G. Hornung, German pharmacist in Schwarzburg, 1795–1862) [Appel & Al-Shehbaz 1998 Novon 7:338–340] Hutchinsia used by Rollins (1993) and in TJM (1993), but name illegitimate.
Unabridged note: Hymenolobus, Pritzelago also generic synonyms.
Annual. Stem: decumbent to erect, branched at base (simple), (2)5–22(30) cm. Leaf: basal, proximal cauline petioled, (0.4)0.7–1.5(2.5) cm, obovate to oblanceolate, entire to toothed or lobed; distal cauline sessile. Flower: sepals 0.6–1.1 mm; petals 0.6–1.2 mm, spoon-shaped, white. Fruit: (2)3–4(4.5) mm, elliptic to obovate or oblong; valve with prominent midvein; style to 0.1 mm; pedicel spreading, 3–8(12) mm. Seed: 10–24, 0.5–0.6 mm, oblong.
2n=12, 24. Saline flats, shaded sites, woodland, desert, meadows, salt marshes, sagebrush scrub; < 2900 m. California (except Klamath Ranges, n&c High Sierra Nevada); to British Columbia, eastern Canada, Colorado; native to Eurasia. [Hutchinsia procumbens (L.) Desv.] Feb–Jul [Online Interchange]
Unabridged synonyms: [Hymenolobus procumbens (L.) Nutt. ex Torr. & A. Gray]
Previous taxon: Hornungia
Next taxon: Iberis
Citation for the whole project: Jepson Flora Project (eds.) 2013. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on Mar 12 2014
Citation for this treatment: [Author of taxon treatment] 2012. Hornungia, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=81333, accessed on Mar 12 2014
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