Calyx divided nearly to the base; segments 5, subequal, narrow-oblong or linear. Corolla 1–1 1/2 in. long; tube dilated nearly from the base, funnel-shaped; lobes 5, short, subequal, contorted in bud. Stamens 4, subsimilar; anther-cells 2, linear-oblong, parallel, at equal height, glabrous, base rounded; pollen globose, echinate. Ovary glabrous; ovules 2 in each cell; style hairy, one branch linear-oblong, the other minute or 0. Capsule broad-oblong, contracted, solid at the base; seeds with many hygroscopic hairs. —Shrubs. Leaves entire, more or less crenate, becoming nearly glabrous in age. Inflorescence lax or dense, mostly on short axillary branches; bract as long as the calyx, oblong or obovate, green; bracteoles shorter than the calyx, oblong.