Plants ca. 33 cm tall. Roots numerous, fleshy, clustered. Stems slender, pubescent. Petiole 0.5-2.5 cm; leaf blade ovate to elliptic, 6-10 × 3-6 cm, pubescent adaxially and along veins abaxially, base oblique, decurrent, margin entire, apex acute or acuminate. Pedicel 1-1.5 cm, pubescent, nodding. Calyx campanulate, 1-1.3 cm, tube ca. 6 × 7 mm, divided nearly halfway; lobes unequal, 4-9 mm, longest broadly linear, equaling corolla, shortest narrowly deltate, ciliate. Corolla campanulate, ca. 2 × 2 cm; lobes short deltate, ciliate. Stamens 6-7 mm; filaments 5-6 mm, glabrous; anthers ca. 2 mm. Stigma 2-lobed. Fruit unknown. Fl. May-Jul.
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