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.

Habit: Perennial herb, low-cespitose, cushion-like; caudex woody, many-branched; hairs simple or mixed with stalked forked or +- many-branched hairs. Stem: scapose, erect, leaves 0--few. Leaf: basal rosetted at tip of caudex branches, sessile, entire, thickened at base; cauline few or 0, bases not lobed. Inflorescence: +- elongated; bracts 0--few. Flower: sepals erect or ascending, base not sac-like; petals white to pale yellow. Fruit: silicle, sessile, ovoid to ellipsoid, dehiscent, unsegmented; valves rounded or keeled, glabrous or hairy; stigma entire. Seed: 1--4, plump, +- ovoid to oblong; wing 0.
Etymology: (W.C. Cusick, Oregon plant collector, 1842--1922)
eFlora Treatment Author: Ihsan A. Al-Shehbaz
Reference: Rollins 1988 J Jap Bot 63:65--69