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: JEWELFLOWER
Habit: Annual to perennial herb, generally +- glaucous; hairs simple or 0. Leaf: basal rosetted or not, petioled, entire or dentate to pinnately lobed or divided; cauline sessile, occasionally petioled, base generally lobed or clasping. Inflorescence: elongated. Flower: radial or bilateral; calyx urn- or occasionally bell-shaped, sepals erect, base +- sac-like, keeled or not; petal blade narrower to wider than proximal 1/2, generally channeled, margins +- crinkled or not; stamens in 3 pairs of unequal length, or 4 long and 2 short, longest filaments fused or free. Fruit: silique, dehiscent, linear, flat parallel to septum, unsegmented; stigma entire or 2-lobed. Seed: 10--120, in 1 row, generally winged.
Species In Genus: 35 species: southwestern United States, northern Mexico. Etymology: (Greek: twisted flower, from wavy-margined petals)
Habit: Annual, stiff-hairy basally (glabrous throughout). Stem: (0.8)1.5--9(12) dm, simple to branched throughout. Leaf: basal not rosetted, petioled, early-deciduous, coarsely dentate to +- lobed; mid-cauline sessile, 1--12 cm, lance-linear to oblanceolate, entire to coarsely dentate, leaf base lobed to clasping; distal similar, reduced, generally entire. Inflorescence: open, 1-sided or not; terminal sterile flower cluster 0. Flower: calyx bilateral, sepals (3)5--10(13) mm, lanceolate to broadly ovate, white to yellow, rose, purple, or purple-black, glabrous or bristles sparse; petals 7--17 mm, 1--3 mm wide, +- equal or adaxial pair longer, crinkled; filaments in 3 pairs of unequal length; longest pair fused, 5--13 mm; fertile anthers 1--2.5 mm. Fruit: ascending to spreading or reflexed, 3--11 cm, 1.5--2.5 mm wide, straight or curved, not constricted between seeds; valve midveins distinct, glabrous or sparsely to moderately hairy; stigma +- entire; pedicels ascending to spreading, 0.2--3.2 cm. Seed: 22--70, 1.5--2.1 mm, ovate to oblong; wing continuous, 0.1--0.5 mm wide.
Note: 8 subspecies recognized, 7 in California, most local.
Unabridged Note: Streptanthus glandulosus subsp. josephinensis endemic to southwestern Oregon.