Rounded, clonal shrub to 2 m, grey-green, occasionally rusty-green, densely pubescent with stellate hairs; prickles to 8 mm long, usually abundant on stems and petioles, and on pedicels and calyx of bisexual flower, less common to absent elsewhere. Leaves elliptic to ovate-elliptic, the lamina mostly 4–7 cm long, 1.5–4 cm wide, concolorous, entire; petiole 1–2 cm long. Juvenile leaves ovate-lanceolate, up to 12 cm long, 5 cm wide, entire or slightly undulate. Inflorescence of one bisexual flower below cyme of 12–20 male flowers; peduncle 5–15 mm long. Bisexual flower: pedicels to 25 mm long; calyx 15–23 mm long, the lobes narrowly triangular, 10–16 mm long, lengthened in fruit; corolla broadly stellate to almost rotate, 40–50 mm diam., deep purple; anthers 7–8 mm long. Male flowers: pedicels c. 10 mm long; calyx 10–13 mm long; the lobes broadly lanceolate, 6–10 mm long, often partly fused; corolla rotate, 20–40 mm diam., purple; anthers 6–8 mm long. Berry globular, 25–40 mm diam., yellow when ripe, drying nearly black; fruiting pedicel 20–25 mm long; fruiting calyx lobes 20–35 mm long. Seeds 4–5 mm long, black.
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A rounded prickly shrub. It grows 0.3-2 m high. The flowers are purple and blue.