TREATMENT FROM THE JEPSON MANUAL (1993) |
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Annual to subshrub
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 1many 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 80:686699; Rollins 1993 Cruciferae of Continental North America. Stanford Univ Press]
Family description, key to genera by Robert A. Price.THELYPODIUM
Winter annual to biennial, perennial herb; hairs 0 or simple
Stem generally erect, branched or not
Leaves: basal generally rosetted, petioled, generally shed early, entire to pinnately lobed; cauline petioled or sessile, often clasping
Flower: sepals erect to reflexed, greenish, white, lavender, or purplish, bases sac-like or not; petals linear to oblanceolate, white, lavender, or purple; stamens equal or 4 long, 2 short, paired filaments rarely ± fused
Fruit erect or spreading, narrowly linear, ± narrowed between seeds, cylindric or ± flat parallel to septum, generally stalked above receptacle; pedicel ± flat at base or not, generally expanded at tip; stigma in width < style tip, generally entire
Seeds 1 row per chamber, ± flat; wing generally 0; embryonic root at edge or toward back of 1 cotyledon
Species in genus: 20 species: w North America
Etymology: (Greek: female foot, from fruit stalk above receptacle)
Reference: [Al-Shehbaz 1973 Contr Gray Herb 204:1148]
Native T. stenopetalum S. Watson
SLENDER-PETALED THELYPODIUM
Biennial, glabrous, glaucous
Stem ± decumbent, 38 dm, branched from base
Leaves: basal 415 cm, oblanceolate to oblong, entire or wavy-margined, thickish; cauline ascending, sessile, 25 cm, ± oblong-lanceolate, sagittate, clasping stem, ± entire to few-toothed or shallowly lobed
Flower: petals linear, lavender, rarely white, blades crinkled at base; paired filaments free
Fruit 35 cm, straight to ± curved, cylindric or rarely 4-angled, ± narrowed between seeds; stalk above receptacle 0.53.5 mm, stout; pedicel ascending, rarely ± spreading, 48 mm, stout, base not flat; style 12 mm, slender
Seed: embryonic root at edge or back of 1 cotyledon
Ecology: Alkaline flats, lake shores
Elevation: 19002200 m.
Bioregional distribution: San Bernardino Mountains (Bear Valley).
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