Shrub 2–4 m high. Branchlets with aculei (0.5–1.8 mm long) and glandular hairs. Stipules caducous, linear, 3–5 mm long. Mature leaves: petiole 40–240 mm long, indumentum dissimilar to the branchlet (stellate hairs in a dense longitudinal band on the adaxial surface, more sparsely distributed elsewhere, and aculei); lamina broadly to depressed ovate, unlobed to shallowly 3-lobed (lobes shorter than wide), 60–125 mm long, 70–210 mm wide, truncate to cordate base, serrate to subentire margin, acute or acuminate apex, concolorous to weakly discolorous, the indumentum similar on both surfaces or denser on the abaxial surface, the abaxial surface with the midrib and primary vein indumentum dissimilar to that of the interveinal regions, aculei present on midrib and major veins only (0.75–1.75 mm long), stellate hairs scattered to very dense and fine (0.1–0.6 mm long, may be sparse or absent on the areolae). Distal leaves reduced in size, narrowly elliptic, ovate or narrowly ovate. Foliar nectary at lamina base, 5–8 mm long. Flowers solitary in leaf axils or sympodial in few-to several-flowered terminal and/or distal-axillary racemoid axes, not pedunculate; pedicel 3–16 (–52) mm long, glabrous or with stellate hairs and aculei; epicalyx glabrous or with stellate hairs and aculei, 10–11-segmented, segments connate at the base, straight, subulate, 3-veined, 0.35–0.5(–0.75) times the length of the calyx, 7–10 mm long; calyx at anthesis 15–20 mm long, indumentum whitish, often almost glabrous with a few fine stellate hairs and sparse to moderately dense aculei on the ribs, calyx nectaries absent; petals 50–70 mm long, pink with proximal region reddish; staminal column 14–17 mm long, stamens distributed along the distal 12–15 mm of the column, filaments 1 mm long; style exserted 6–8 mm beyond apex of staminal column, branches 1 mm long, stigmas capitate, stigma hairs 0.5 mm long. Capsule ovoid, 16–19 mm long, densely hairy, beak 1–1.5 mm long. Seed angular-reniform, 4 mm long, striate and minutely pectinate-pubescent.
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