Perennials; short-lived; apomictic; caudex not woody. Stems usually 1 per caudex branch, arising from center of rosette near ground surface, 2-8(-9.6) dm, densely pubescent proximally, trichomes simple and short-stalked, 2-4-rayed, to 1 mm, sparsely pubescent or glabrous distally. Basal leaves: blade oblanceolate, 2-8(-11) mm wide, margins entire or denticulate, ciliate proximally, trichomes (simple), 0.5-1 mm, surfaces sparsely to densely pubescent, trichomes short-stalked, 2-4 (or 5)-rayed, 0.2-0.5 mm, these mixed with fewer simple ones. Cauline leaves: 7-33, often concealing stem proximally; blade auricles 1-3 mm, surfaces of distalmost leaves sparsely pubescent or glabrous. Racemes 15-63-flowered, usually unbranched. Fruiting pedicels reflexed, abruptly recurved near base, otherwise straight, 4-12 mm, sparsely pubescent or glabrous, trichomes spreading, simple and 2-rayed. Flowers divaricate to pendent at anthesis; sepals pubescent; petals white to lavender, 5-6 × 1-1.5 mm, glabrous; pollen spheroid. Fruits reflexed to closely pendent, not appressed to rachis, not secund, straight or curved, edges parallel, (4.5-)5.5-8.5 cm × 1.5-2 mm; valves glabrous; ovules 70-110 per ovary; style 0.05-0.4 mm. Seeds uniseriate, 1.5-1.8 × 1.2-1.5 mm; wing continuous, 0.15-0.3 mm wide.
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