Erect, 3-10 ft. high; stem sometimes 2-3 in. in diam. at the base; branches ascending, pallid, the upper parts tomentose with dense long and short barbellate hairs; leaves 3-nate, crowded, spreading, incurved, subulate-linear, acute or acuminate, somewhat trigonous, sulcate, glabrous, 3-5 lin. long; flowers 3-nate; pedicels pubescent, 11/2-21/2 lin. long; bracts approximate, or the lowest subremote, lanceolate, scarious, keeled, 2-2 1/2 lin. long; sepals like the bracts but ovate, incurved, 2 1/2-3 lin. long, about as long as the corolla; corolla campanulate-urceolate, slightly contracted at the throat, glabrous, white, about 2 1/2 lin. long; segments spreading, 1/3-2/3 the length of the tube; filaments tapering upwards, bent above; anthers variable, included, dorsifixed at or near the base; cells deeply partite and sometimes spreading or incurved, oblong, tapering to the base, or longitudinally semiovate, obtuse or subacute, scaberulous, about 1/2 lin. long, crested; pore 2/3 the length of the cell; crests from linear to broadly ovate, denticulate, or more or less incised, equalling or little shorter than the cells, brown; style short, included; stigma capitellate; ovary glabrous.
More
Erect, robust shrub to 2 m. Flowers small, calycine, urn-shaped, white or tinged red.