Usually 2-3 m high. Branchlets 3-sided, ± pubescent, becoming glabrous. Leaves often imbricate, 1-3.5 (usually 1-5) cm long, erect-spreading, spreading or occasionally recurved, shortly petiolate, linear or almost acicular, obtuse or acute ± concave above or flat, 1-veined, glabrous or rarely pubescent on the lower half of the upper surface or about the apex. Flowers in short spikes grouped in panicles. Bracts (modified leaves) shorter to slightly longer than the flowers, linear, lanceolate or ovate, acute, concave and villous above. Bracteoles 2 or 3, 1-1.5 mm long, ovate or rotund, keeled or rounded on the back, concave and glabrous or partly villous on the ventral surface, ciliate. Calyx-lobes 0.5-1 mm long, ovate or rotund, glabrous or sparsely ciliate. Petals 1-5 mm long, free, very obtuse, with keels converging at the base. Anthers 0-25 or scarcely 0-5 mm long. Ovary § inferior, villous at the apex, with 2 biovulate chambers: styles 2, free or connate at the base. Fruit unknown.
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Erect, closely leafy shrub to 3 m. Leaves linear, ascending-spreading, imbricate, Flowers in slender spikes grouped in panicles, white; bracteoles ovate or rotund.