Common Name: MUSTARD FAMILY Habit: 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. Genera In Family: +- 330 genera, 3780 species: worldwide, especially temperate. Note: 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 NCoR, Carrichtera annua (L.) DC. in SCo, Iberis sempervirens L., Iberis umbellata L. in PR, Teesdalia coronopifolia (Bergeret) Thell., Teesdalia nudicaulis (L.) W.T. Aiton in southern NCoRO, CCo. Cardaria, Coronopus moved to Lepidium; Caulostramina to Hesperidanthus; Guillenia to Caulanthus; Heterodraba to Athysanus; California taxa of Lesquerella to Physaria; Malcolmia africana to Strigosella. eFlora Treatment Author: Ihsan A. Al-Shehbaz, except as noted Scientific Editor: Douglas H. Goldman, Bruce G. Baldwin.
Common Name: PEPPERGRASS, PEPPERCRESS Habit: Annual to perennial herb (shrub); hairs 0 or simple. Leaf: basal rosetted or not, petioled, entire, dentate, to 1--3-pinnately lobed; cauline short-petioled to sessile, base occasionally lobed to clasping. Inflorescence: elongated or congested. Flower: sepals erect or spreading, oblong to ovate, base not sac-like; petals linear to obovate, white or yellow (pink or purple), occasionally reduced or 0; stamens 2, 4, or 6. Fruit: silicle, generally dehiscent, oblong to ovate, obcordate, or round (spectacle-shaped), flat perpendicular to septum (inflated), unsegmented. Seed: 2(4), gelatinous when wet; wing narrow or 0. Etymology: (Greek: little scale, from fruit) eFlora Treatment Author: Ihsan A. Al-Shehbaz Reference: Al-Shehbaz et al. 2002 Novon 12:5--11 Unabridged Reference: Hitchcock 1936 Madroño 3:265--300
Lepidium pinnatifidum Ledeb.
NATURALIZED Habit: Annual, puberulent. Stem: erect, 2--6 dm, many-branched distally. Leaf: basal not rosetted, early-deciduous, dentate to pinnately lobed; mid-cauline short-petioled to sessile, 1--3.3 cm, narrowly oblanceolate to linear, entire, base tapered, not lobed. Inflorescence: panicle, elongated; rachis glabrous or puberulent, hairs straight. Flower: sepals 0.7--0.8 mm; petals 0.4--0.6 mm, to 0.1 mm wide, linear, white; stamens 4. Fruit: 1.8--2 mm, 1.7--1.8 mm wide, round to broadly elliptic, flat, tip wingless, notch to 0.1 mm; valves sparsely soft-hairy, not veined; style +- 0.1 mm, included in notch; pedicel spreading, 2--3.5 mm, cylindric, puberulent adaxially. Seed: 1--1.2 mm, oblong. Ecology: Disturbed areas; Elevation: < 200 m. Bioregional Distribution: CCo, SCo; Distribution Outside California: native to Europe, southwestern Asia. Flowering Time: May--Jun Jepson eFlora Author: Ihsan A. Al-Shehbaz Reference: Al-Shehbaz et al. 2002 Novon 12:5--11 Index of California Plant Names (ICPN; linked via the Jepson Online Interchange) Previous taxon: Lepidium perfoliatum Next taxon: Lepidium ramosissimum
Citation for this treatment: Ihsan A. Al-Shehbaz 2012, Lepidium pinnatifidum, in Jepson Flora Project (eds.) Jepson eFlora, https://ucjeps.berkeley.edu/eflora/eflora_display.php?tid=30556, accessed on October 10, 2024.
Citation for the whole project: Jepson Flora Project (eds.) 2024, Jepson eFlora, https://ucjeps.berkeley.edu/eflora/, accessed on October 10, 2024.
No expert verified images found for Lepidium pinnatifidum.
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