Higher Taxonomy
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.
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Rapistrum
Habit: Annual [perennial herb]; hairs simple [or 0]. Leaf: proximal petioled, pinnately lobed; distal sessile or short-petioled, lobed or dentate, base not lobed. Inflorescence: much elongated. Flower: sepals ascending, base not sac-like; petals obovate, yellow, short-clawed. Fruit: silicle, indehiscent, segmented, strongly constricted between segments; proximal segment tardily dehiscent, 1(3)-seeded; terminal segment indehiscent, 1-seeded (seedless); stigma 2-lobed. Seed: 1--4, in 1 row, wingless. Species In Genus: 2 species: Europe. Etymology: (Latin: turnip-like) Jepson eFlora Author: Ihsan A. Al-Shehbaz Index of California Plant Names (ICPN; linked via the Jepson Online Interchange)
Previous taxon: Raphanus sativusNext taxon: Rapistrum rugosum
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Citation for this treatment: Ihsan A. Al-Shehbaz 2012, Rapistrum, in Jepson Flora Project (eds.) Jepson eFlora, https://ucjeps.berkeley.edu/eflora/eflora_display.php?tid=10615, accessed on February 07, 2025.
Citation for the whole project: Jepson Flora Project (eds.) 2025, Jepson eFlora, https://ucjeps.berkeley.edu/eflora/, accessed on February 07, 2025.
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