Erect, robust shrub up to 1 m (3 ft) high. Branches with short, imbricate branchlets throughout, tomentose with hairs of mixed lengths, some of them branched. Leaves 3-nate, 4-6 mm long, more or less spreading, linear, sulcate, glabrous, very shortly setose-ciliate; petioles about 1.5 mm long. Flowers 3-nate, terminal, calycine or subcalycine; peduncles 2-4 mm long, pubescent; bracts approximate, sepal-like but smaller and usually narrower. Sepals 2-4 mm long, erect or spreading, imbricate, the inner ovate-lanceolate or broad-ovate, the outer broad-ovate to suborbicular, concave, keeled and keel-tipped, the tip revolute above and gland-ciliate on the margins, setose-ciliate mainly on the middle portion, scarious, white, the colour, unlike that of the corolla, persistent long after maturity. Corolla 3- long, mostly obconic-tubular, subtetragonous, viscid above probably from the glands on the sepals, glabrous, white soon turning brown after maturity; lobes 2 mm long, continuous or slightly spreading at the tips, obtuse and, sometimes, crenulate. Filaments dilated below the anthers; anthers exserted, 1.5 mm long, subterminal, oblong, bipartite, black, muticous; pore large. Ovary oblong, glabrous; style exserted; stigma capitellate.
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Branches spreading; leaves spreading to squarrose, long-petiolate, linear, thick, 2-3 lin. long; pedicels 2 lin. long; bracts approximate, scarious, small; sepals ovate, acute, rigid, scarious, 1 1/2-1 3/4 lin. long; corolla obconic-tubular, subtetragonous, glabrous (viscid, acc. to Bentham), 2 1/2 lin. long, or (owing to the spreading of the sepals at base) appearing twice as long as the sepals; segments slightly spreading; filaments slightly curved; anthers subterminal, oblong, obtuse, 5/8-3/4 lin. long; pore more than 1/2 the length of the cell; stigma clavate; ovary glabrous.
Erect shrublet to 1 m. Flowers small to medium, ovoid-cup-shaped, calycine, white, with exserted anthers.