Plants perennial, base with overlapping bud scales. Leaves developing at same time as flowers; petiole nearly as long as to 2 X as long as leaf blade, narrowly winged; leaf blade oblong-obovate to oblong-elliptic, 4--10 X 2.5--5 cm, enlarging after anthesis, glandular ciliate, abaxially pilose along midvein and lateral veins, adaxially glabrous, base subcuneate to rounded or cordulate, margin slightly repand to remotely denticulate, apex obtuse. Scapes 15--25 cm, elongating to 65 cm in fruit, densely pilose toward apex. Calyx 1--1.3 cm, densely pubescent outside; lobes lanceolate, glandular ciliate, apex obtuse; veins 3. Corolla dark purple, infundibuliform, 5--7 cm, sparsely glandular pubescent; tube ca. 4 X as long as calyx, gradually enlarged upward from base; limb ca. 5 cm wide; lobes broadly ovate to elliptic or even suborbicular, sparsely ciliate, margin obscurely crenulate, apex 2-lobed. Stamens inserted above middle of corolla tube; filaments 7--7.5 mm, glabrous; anthers 4.2--5 mm. Ovary and style glabrous. Capsule to 2 cm. Fl. Jun-Jul.
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