Perennial, very rigidly hispid, 2–3 ft. high. Stems simple or branches few, spreading, at length woody; internodes nearly as long as the leaves. Leaves shortly but distinctly stalked, thick, rigid, spreading, narrowly lanceolate, 1/2–1 1/4 in. long, floral gradually smaller, obtuse, base rounded; venation strong, with about four primary veins on each side; margin broadly crenate. Flowers about 1/2 in. in diam., solitary in the axils of the reduced leaves, pairs not overlapping each other, often distant; peduncles shorter than the calyx, without bracteoles. Calyx about 3 lin. long, distinctly ribbed; lobes nearly equal, longer than the tube, ovate-oblong, obtuse, thickened at the margin and with or without one or more crenatures. Corolla pubescent outside, very obliquely campanulate, longitudinally veined; tube shorter than the limb, abruptly curved at the top; limb almost equally 5-lobed; lobes broad, rounded. Anthers bearded. Capsule oblong, about 1/2 in. long, hairy, truncate. Seeds very numerous, oblong, longitudinally 7-winged on the back; wings broad, conspicuously transversely ribbed.
