Erect, robust, 1-4 ft. high; branches subvirgate, pubescent; leaves 4-nate, erect or subspreading, crowded, laxly imbricate, incurved, subulate, acute, nearly fiat, sulcate, glabrous, or the younger sometimes thinly pilose, 2 1/2-7 (mostly 4-6) lin. long; flowers 4-nate, or umbellate, 5-7-flowered; pedicels pubescent, 1 1/2-2 lin. long; bracts subapproximate, ovate, acute, searious, 1 1/2 lin. long; sepals in opposite pairs, imbricate and somewhat closely enwrapping the corolla, obovate or suborbicular, keel-tipped, acute, thick and wrinkled below, concave, scarious, subviscidulous, glabrous, about 2 1/2 lin. long, reaching to the top of the corolla-segments or nearly so; corolla cyathiform, widened to the mouth, or subobconic, white, 1 3/4-2 1/4 lin. long; limb slightly expanded, but not recurved; segments ovate, 1-1 1/4 lin. long, or about 3/4-4/5 the length of the tube; filaments slender, bent; anthers subincluded, sometimes manifest, oblong, obtuse, scaberulous, brown, 1/2-4/5 lin. long, crested; pore about 2/3 the length of the cell; crests suborbicular, incised, less than 1/2 the length of the cell; style decurved; stigma clavate-capitellate, 4-dentate; ovules compressed; seeds unknown.
Erect, robust shrub, 0.9-2.0(-3.2) m high. Leaves 4-nate, imbricate, 5-14 mm long, incurved, subulate, acute, sulcate, ± glabrous. Flowers 4-nate or umbellate, 5-7-flowered. Calyx sepals 5 mm long, in opposite pairs, imbricate, obovate or suborbicular, keel-tipped, concave, scarious, subviscidulous, ± glabrous. Corolla 3.5-4.5 mm long, cyathiform, widened to mouth or subobconical, dry, glabrous, white soon turning brown; lobes slightly spreading, ovate, 2.0-2.5 mm long. Filaments flat, slender, bent; anthers subincluded to manifest, 1.0-1.6 mm long, lateral, oblong, obtuse, minutely scabrid, brown, appendiculate; pore ± 2/3 length of theca; crest suborbicular, incised, less than 1/2 length of theca. Ovary subturbinate, deeply grooved, glabrous; style exserted; stigma clavate-capitellate, 4-dentate. Flowering time Dec.-Mar.