Suffruticose. Stem terete, 1–3 ft. high, covered by compact stellate tomentum; spines 2 lin. long, compressed. Leaves solitary, lanceolate, 4 in. long, 1 in. wide, sinuate, acute at the base, stellately hairy on both surfaces, spiny on the midrib. Cymes near the apex of the branches, few-flowered. Calyx campanulate, 2 lin. long, covered with stellate hairs outside; lobes 5, short, triangular, acute. Corolla 4–6 times as long as the calyx, 1 in. in diam., broadly campanulate, membranous, stellately hairy outside; lobes 5, pale lilac, midribs white, broadly triangular, acute. Stamens 5; filaments very short; anthers 1/4 in. long, oblong, obtuse, pore terminal. Ovary subglobose, stellately hairy at the apex.
