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BRASSICACEAE (Cruciferae) MUSTARD FAMILY

Ihsan A. Al-Shehbaz, except as noted

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

HESPERIDANTHUS
Perennial herb or subshrub, glabrous, glaucous. Stem: generally branched distally, woody at base. Leaf: all cauline, ± fleshy, petioled to ± sessile, base not lobed, [entire] dentate. Inflorescence: elongated. Flower: sepals erect to ascending, base not sac-like; petals obovate to spoon-shaped, white to yellow, lavender, or purple, generally not clawed. Fruit: silique, dehiscent, unsegmented, linear, cylindric or ± flat parallel to septum; stigma entire or 2-lobed. Seed: 8–110 in 1 row, wingless.
5 species: western United States, northern Mexico. (Greek: resembling flowers of Hesperis) [Al-Shehbaz 2005 Harvard Pap Bot 10:47–51]

H. jaegeri (Rollins) Al-Shehbaz
NATIVE
Perennial herb, occasionally subshrub, woody, branched at base, 1–3 dm, deep-rooted. Stem: wavy. Leaf: 3–7 per stem, (2)3–6 cm, 1–3.5 cm wide, ovate, coarsely dentate; petiole 1–2 cm. Flower: sepals 5–7 mm, oblong, ± purple; petals 9–14 mm, 2.5–4 mm wide, spoon-shaped, white to purple, purple-veined. Fruit: (2)3–5 cm, 1–1.2 mm wide; style 0.7–1.5 mm; pedicel spreading to ascending, 6–14 mm. Seed: 26–42, 1.2–1.5 mm, oblong.
Rocky crevices, cliffs, limestone clefts; 1500–2800 m. s White and Inyo Mountains (Inyo Mtns). [Caulostramina jaegeri (Rollins) Rollins] Marble, Teufel canyons, Cerro Gordo Peak in Inyo Co. Apr–Jun [Online Interchange] {CNPS listed}
Unabridged synonyms: [Thelypodium jaegeri Rollins]

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Citation for the whole project: Jepson Flora Project (eds.) 2013. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on Apr 20 2014
Citation for this treatment: [Author of taxon treatment] 2012. Hesperidanthus, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=91749, accessed on Apr 20 2014

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Bioregions in which Hesperidanthus jaegeri occurs 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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CCH collections by month

Duplicates counted once; synonyms included.
Species do not include records of infraspecific taxa.
Blue line denotes eFlora flowering time.