Herbs, to 10 cm tall, with fetid odor; rhizomes sparsely branched, with nodes tuberous and conspicuously enlarged, with internodes usually more than 2 cm; stems quadrate, glabrous except densely hirtellous or pilosulous in 2 interpetiolar rows. Leaves 2 or 3 pairs; petiole 0.3-2 cm, glabrous or densely pilosulous abaxially; blade drying membranous, deltoid-ovate, 0.8-4.5 × 0.6-3.5 cm, sparsely hispidulous on both surfaces, base cuneate to truncate, margins entire or ciliate, apex acute or obtuse; secondary veins 4 or 5 pairs; stipules ca. 0.5 mm. Inflorescences 2-6-flowered; peduncles 2-4 mm, puberulent. Calyx hispidulous in lines; hypanthium portion obconic, longitudinally ribbed, ca. 1 mm; lobes ovate to ovate-lanceolate, ca. 2 mm. Corolla white or pink, salverform, externally glabrous, internally pilosulous in tube and on lobes; tube ca. 5 mm; lobes lanceolate or narrowly elliptic-oblong, ca. 4 mm, acute to subacute. Capsules obconic, size not noted; seeds ca. 1.2 mm. Fl. Jun-Aug, fr. Aug-Oct.
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