Herbs, perennial, not viviparous, 1-7 dm, glabrous. Stems erect, branching near base, herbaceous. Leaves caducous, in basal rosettes and cauline, (± alike, gradually smaller distally), proximal opposite, distal alternate, (sometimes crowded at base), sessile, not connate basally; blade elliptic or ovate-lanceolate to oblanceolate, planoconvex, 1-2.5 cm, fleshy, base not spurred, margins entire; veins not conspicuous. Inflorescences terminal spikes, racemes, or narrow thyrses, (usually 2+ per node, rarely solitary). Pedicels: flowers subsessile. Flowers erect, 5-merous; sepals distinct, subequal; petals erect with outcurved tips, distinct, buff or dull yellow often marked with red; calyx and corolla not circumscissile in fruit; nectaries subquadrate; stamens 10; filaments of epipetalous stamens adnate to corolla base; pistils erect, nearly distinct; ovary base truncate tapering to slender, outcurved styles; styles 2+ times shorter than ovaries. Fruits erect. Seeds ellipsoid, finely grooved.
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