Perennials; long-lived; sexual; caudex woody. Stems usually 1 per caudex branch, arising from center of rosette, often slightly elevated above ground surface on woody base, 2-5 dm, glabrous throughout. Basal leaves: blade oblanceolate, 5-12 mm wide, margins dentate, ciliate (at least proximally), trichomes (usually simple), 1-2 mm, surfaces moderately pubescent, trichomes short-stalked, 2-4-rayed, 0.4-0.6 mm. Cauline leaves: 5-12, often concealing stem proximally; blade auricles 1-2 mm, surfaces distally glabrous. Racemes 10-35-flowered, usually unbranched. Fruiting pedicels horizontal to divaricate-ascending, curved or angled downward, 10-20 mm, glabrous. Flowers divaricate-ascending at anthesis; sepals glabrous; petals white to lavender, 5-8 × 1.5-2 mm, glabrous; pollen ellipsoid. Fruits widely pendent, not appressed to rachis, not secund, curved to nearly straight, edges parallel, 3.5-5 cm × 2.5-3 mm; valves glabrous; ovules 80-130 per ovary; style 0.2-0.7 mm. Seeds biseriate, 1.1-1.3 × 0.9-1 mm; wing distal or continuous, 0.1-0.15 mm wide.
Home