Erect, reaching 7-8 ft. high (Schlechter); branches stout, rather straight, puberulous; leaves 4-nate, erect-incurved, crowded, densely imbricate, linear-subulate, acuminate, keeled, glabrous, 4-5 lin. long; flowers 4-nate, sometimes clustered and umbellate, mostly at length cernuous; pedicels puberulous or villous, 3-4 lin. long; bracts subapproximate, spreading, lax, broad-ovate, acute or acuminate, keeled, papery, white, 2 1/2-3 1/2 lin. long; sepals like the bracts, but nearly erect, imbricating for about 1/2 their length more or less, much wrinkled in the lower part (in the dried state), 4-5 lin. long, mostly reaching 1/2-1 lin. lower than the corolla or sometimes equalling it; corolla varying between campanulate, broad-cyathiform and subobconic, always widening to the mouth, glabrous, 4 1/2-5 lin. long, apparently varying from pale rose to nearly white; segments erect or very slightly spreading at maturity, shortly afterwards becoming connivent and giving the corolla a somewhat ovoid shape, semiovate, about 1/2 the tube in length; filaments tapering upwards from a broader base, sigmoid, 1-1 1/4 lin. long; anthers dorsifixed well above the base, broad-linear, much tapering to the acuminate point, and produced sometimes much beyond the pore, scabrid, about 1 1/2 lin. long, or sometimes a little more, aristate; pore about 1/2 the length of the cell; awns upcurved, 1/5-1/4 of the length of the cell; style slender; stigma simple; ovary glabrous.
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Erect shrublet to 1 m. Flowers medium, calycine, cup-shaped, white.