Herbs; stems ascendant to sprawling, hollow, to 1.2 m long, glabrate below and moderately pilose above with trichomes 0.5-1 mm long. Principal leaves with blades ovate-lanceolate to ovate or ovate-oblong, (5-)7-12(-14) cm long, (1.5-) 2.5-5(-7) cm wide, mostly 2-3 times as long as wide, apically acute, basally cune-ate to rounded, rarely almost truncate, marginally conspicuously dentate with the teeth ca. 0.5 mm long and 4-8 per cm, glabrous above except sparingly pilose on the impressed principal veins, beneath spreading pilose especially along the ele-vated veins; petioles ca. 1.2 cm long, moderately pilose. Flowers solitary in the axils of the upper leaves, 7.5-8.5 cm long; pedicels sparingly pilose, 5-12 cm long; brac-teoles 2, linear, entire to sparingly dentate, pilose, 6-10 mm long, ca. 1 mm wide at the base, borne 3-8(-12) mm from the pedicel base; hypanthium sparingly pilose, 9-15 mm long in flower; calyx lobes linear or narrowly lanceolate, acute, usually obscurely toothed, somewhat pilose, 12-15 (-18) cm long; corolla magenta or reddish purple, the tube 3.5-4.3 cm long, straight, narrowest at the base where about 4 mm in diameter, enlarging to the mouth where 7-10 mm in diameter, externally pilose to short-pubescent, becoming densely so above, the trichomes mostly 0.5 mm long or longer, the lobes linear, acute to acuminate with a con-spicuous fringe of enlarged trichomes and corolline appendages or outgrowths 1.0-1.7 mm long, the upper 2 lobes 1.8-2.5 cm long, the lower 3 lobes 2.2-3.0 cm long; filament tube glabrous, 5-6 cm long, exserted from the corolla tube, the anthers 7-11 mm long, glabrous except for a tuft of white trichomes ca. 1.5 mm long at the tip of the 2 shortest anthers. Berries leathery, wide-spreading to pen-dent, 2.2-3.7 cm long, 1.2-1.8(-2.4) cm wide; seeds plumply lenticular, 0.6-0.7 mm long, foveate-reticulate.
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