Leaves generally basal and cauline, alternate, generally simple; stipules 0
Inflorescence: generally raceme
Flower bisexual; sepals 4, free; petals (0)4, free, generally white or yellow, often clawed; stamens generally (2,4)6, generally 4 long, 2 short; ovary 1, superior, chambers generally 2, septum membranous, connecting 2 parietal placentas, style 1, stigma simple or 2-lobed
Fruit: generally capsule ("silique") with 2 deciduous valves, sometimes breaking transversely or indehiscent
Seeds 1–many per chamber
Genera in family: 300+ genera, 3000+ species: worldwide, especially cool regions; some cultivated for food (especially Brassica, Raphanus ) and ornamental
Recent taxonomic note: Recently treated to include Capparaceae [Rodman et al. 1993 Ann Missouri Bot Gard 80:686–699; Rollins 1993 Cruciferae of Continental North America. Stanford Univ Press]
Family description, key to genera by Robert A. Price.
CAULANTHUS
JEWELFLOWER
Roy E. Buck
Annual to perennial herb, generally tapered-hairy on leaves and lower stem
Stem generally ascending to erect, ± glaucous
Leaves ± entire to deeply cut; basal generally rosetted, withering, generally oblanceolate to obovate; cauline generally linear to obovate, clasping, reduced
Inflorescence becoming more open; bracts generally 0
Flower biradial to ± bilateral; calyx ± urn-shaped, sepals often ± pouched below, generally not green, generally not darker in bud, generally erect after flower; petal (and sepal) margins often scarious, wavy or not; filaments generally in 3 pairs, generally free (or longest 1–2 pairs ± fused below); style < 4 mm, stigma generally 2-lobed
Fruit ascending to reflexed, generally cylindric
Seed generally ± oblong, generally compressed, generally ± brown
Species in genus: ± 14 species: ± sw North America
Etymology: (Greek: stem flower, from use of some as cauliflower-like vegetable)
| Native |
C. amplexicaulis S. Watson
Annual, glabrous
Stem generally branched below
Leaves < 10 cm, lighter on main veins; basal coarsely dentate, tapered to short, winged petiole or ± sessile; cauline widely (ob) ovate, entire to coarsely dentate, sessile, clasping, tips obtuse
Inflorescence open
Flower: sepals 4–9 mm, ± pouched below; petals 7–18 mm, tips generally reflexed, upper pair longer, purplish, lower generally straw-colored or paler purple, margins wavy; style < 0.5 mm, stigma lobes 0 or shallow
Fruit ascending to spreading, < 15 cm, often curved
Ecology: Open, sandy or rocky areas
Elevation: 1000–2800 m.
Bioregional distribution: s Outer South Coast Ranges, Transverse Ranges.
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