7 in. long, virgate; side branches few, erect, straight, swollen at the nodes, very pallid, mostly glabrous, or slightly pubescent near the summit of the flowering branches; leaves 3-nate, erect, adpressed, slightly imbricate, linear-lanceolate, subobtuse, concave above, sulcate-keeled, glabrous, 3-3 1/2 lin. long; flowers 3-nate, cernuous; pedicels decurved, stout, thickened upwards, densely covered with coarse woolly barbellate white hairs, 6-7 lin. long; bracts approximate, large, ovate, scarious, coloured, concave, amplexicaul, 3-3 1/2 lin. long; sepals slightly spreading, ovate, acute, subimbricate at the base, cartilaginous, coloured, 4 lin. long; corolla ovoid-suburceolate, not much contracted at the, throat, glabrous, rosy or lilac, 4 1/2-5 lin. long; segments erect (in the dried specimens, probably somewhat spreading in the living plant), cordate-ovate, imbricate at the base, acute, 3/8-3/7 of the tube in length; filaments broad, rigid, much bent below the anther, about 2 lin. long, considerably longer than the ovary; anthers narrow-oblong, subacute, about 1 lin. long, crested; pore about 1/2 the length of the cell; crests obovate, obtuse or truncate at their apex, serrulate or variously toothed, inserted above the base of the cells, free from the filament, nearly 1/2 the length of the cells; style straight, angular; stigma clavate-capitellate; ovary smooth, pallid, with an apical conical projection.
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Erect, compact shrublet to 50 cm. Flowers medium/large, calycine, urn-shaped, lilac and white.