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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
1 sp.: western North America. (Greek: many combs, from leaf shape)
Perennial herb, cespitose; hairs many-branched, some simple and 2-rayed; generally glaucous. Stem: (2)5–16(20) cm, woody at base. Leaf: cauline, short-petioled, (0.5)1–2.2(2.8) cm, rigid, pinnately divided to comb-like, lobes (2)3–4(5) pairs, linear, sparsely to densely hairy; terminal lobe (2)4–7(10) mm, (0.3)0.5–1(1.5) mm wide; distal-most sessile. Inflorescence: elongated or not. Flower: sepals erect to ascending, 1.5–2 mm, base of lateral pair not sac-like; petals 5–6 mm, white to pale purple, not clawed. Fruit: linear silique to oblong silicle, dehiscent, flat perpendicular to septum, unsegmented, (2)4–13(18) mm, 0.9–2 mm wide, glabrous; style (0.2)0.4–0.7(1) mm; pedicel ascending-spreading, (2)4–7(10) mm, straight. Seed: 30–46, 1 row per chamber, 0.7–0.9 mm, oblong; wing 0.
Saline soils, vernal pool edges, lake margins, meadows, swales, mud flats, dry streambeds, gravel bars, sagebrush scrub; 1000–2500 m. Great Basin Floristic Province; to Oregon, Idaho, Nevada. [Polyctenium fremontii var. confertum Rollins; Polyctenium fremontii var. fremontii; Polyctenium williamsiae Rollins] May–Jul [Online Interchange]
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Next taxon: Raphanus
Citation for the whole project: Jepson Flora Project (eds.) 2013. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on Nov 30 2015
Citation for this treatment: [Author of taxon treatment] 2013. Polyctenium, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=39029, accessed on Nov 30 2015
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|Geographic subdivisions indicated for the distribution of Polyctenium fremontii|| 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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