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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, generally ± glaucous; hairs simple or 0. Leaf: basal rosetted or not, petioled, entire or dentate to pinnately lobed or divided; cauline sessile, occasionally petioled, base generally lobed or clasping. Inflorescence: elongated. Flower: radial or bilateral; calyx urn- or occasionally bell-shaped, sepals erect, base ± sac-like, keeled or not; petal blade narrower to wider than proximal 1/2, generally channeled, margins ± crinkled or not; stamens in 3 pairs of unequal length, or 4 long and 2 short, longest filaments fused or free. Fruit: silique, dehiscent, linear, flat parallel to septum, unsegmented; stigma entire or 2-lobed. Seed: 10–120, in 1 row, generally winged.Key to Streptanthus
35 species: southwestern United States, northern Mexico. (Greek: twisted flower, from wavy-margined petals)
Biennial, glabrous except occasionally sepals. Stem: (2.5)6.5–12(15) dm, simple, generally branched distally. Leaf: basal rosetted, oblanceolate to broadly obovate or round, dentate or wavy, fleshy, gray-green, generally mottled adaxially, ± purple abaxially; mid-cauline sessile, 0.7–5 cm, broadly ovate to narrowly lanceolate, entire, base lobed to clasping; distal much-reduced. Inflorescence: open, 1-sided; terminal sterile flower cluster 0. Flower: calyx ± urn-shaped, sepals 5–8 mm, lance-ovate, keeled, glabrous or hairs sparse to dense, pale yellow to violet; petals 7–10 mm, 1–2 mm wide, channeled, not crinkled, creamy white, veins ± brown-purple; filaments in 3 pairs of unequal length; longest pair fused, 7–9 mm, lower pair fused proximally; fertile anthers 2–3 mm. Fruit: ± erect to spreading, 2.5–8 cm, 1.5–2 mm wide, straight or occasionally ± curved, strongly constricted between seeds; valves glabrous, midvein distinct; stigma entire; pedicel spreading to ascending, 1–3(4) mm, straight. Seed: 24–38, 1.5–2 mm, oblong; wing 0–0.1 mm at seed tip.
2n=28. Serpentine barrens, chaparral, cypress/knobcone-pine woodland; 150–1100 m. c&s North Coast Ranges, Outer South Coast Ranges. [Streptanthus morrisonii subsp. elatus F.W. Hoffm.; Streptanthus morrisonii subsp. hirtiflorus F.W. Hoffm.; Streptanthus morrisonii subsp. kruckebergii R.W. Dolan & LaPré Streptanthus morrisonii subsp. morrisonii] May–Sep [Online Interchange]
Previous taxon: Streptanthus longisiliquus
Next taxon: Streptanthus oblanceolatus
Citation for the whole project: Jepson Flora Project (eds.) 2013. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on Nov 29 2015
Citation for this treatment: [Author of taxon treatment] 2013. Streptanthus, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=45747, accessed on Nov 29 2015
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|Geographic subdivisions indicated for the distribution of Streptanthus morrisonii|| 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.
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(Note: any qualifiers in the taxon distribution description, such as 'northern', 'southern', 'adjacent' etc., are not reflected in the map above, and in some cases indication of a taxon in a subdivision is based on a single collection or author-verified occurence).
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