Shrub or small tree 1.2-4 m tall. Stems densely puberulent and often also sparsely to moderately pubescent-pilose with eglandular hairs 1-2 (-3) mm long.
Sympodial units 4-foliate.
Leaves simple, the blades (2-) 3-28 x 2-16 cm, 1-2 (-2.5) times as long as wide, chartaceous to subcoriaceous, ovate, adaxially sparsely to densely puberulent and often also pilose with eglandular hairs ca. 1-2 mm long, densely puberulent-pubescent abaxially; base (truncate to) cordate with basal lobes up to 2 (-3) cm long; margin entire; apex acuminate; petioles 1-9 cm, densely puberulent and sparsely to moderately pilose.
Inflorescences 4-30 cm, unbranched, rarely forked, with 15-35 (-65) flowers, all flowers perfect, the axes densely puberulent and often sparsely to moderately pubescent-pilose; peduncle 1-6 cm; rachis 3-26 cm; pedicels 10-20 mm, 20-40 mm in fruit, spaced (2-) 3-10 (-14) mm apart, articulated above the base, leaving pedicellar remnants (1-) 2-4 (-6) mm long.
Buds ovoid, often almost globose, obtuse at apex. Flowers with the calyx radius 7-14 mm, the lobes 5-10 x 3-6 mm, broadly ovate, acute at tips, chartaceous, moderately to densely puberulent and pubescent-pilose. Corollas 2-3 cm in diameter, the radius 12-20 mm, campanulate, fleshy, purple, turning pale greenish yellow with age, the tube 4-7 (-9) mm, the lobes 8-15 x 4-7 mm, triangular, acute at apices, moderately to densely glandular-puberulent and eglandular pubescent-pilose abaxially, especially toward apex, adaxially glabrous at base, minutely papillose or tomentose at apices, the margin tomentose. Anther thecae 4-5 x 2-2.5 mm, lanceolate, adpressed to style, violet, the pores directed abaxially and laterally; connective 5 (-6) x 1-2.5 mm, broad at base, abruptly narrowed distally, abaxially slightly shorter than the thecae at apex, exceeding them by ca. 1 mm at base, adaxially present as a small swelling near base, the color unknown. Ovary glabrous or puberulent; style 4-6 x (0.5-) 1 mm at base, (1.5) 2-2.5 mm at apex, about equalling or slightly longer than stamens, obconical, strongly dilated distally, glabrous or puberulent; stigma concave with two apical glands.
Fruit 4-6.3 x 1-1.7 cm, ellipsoid-fusiform, acute at apex, color when ripe unknown, densely puberulent-pubescent; presence of stone cell aggregates in fruits unknown, but possibly absent.