Usually 1-1.5 m high, with glabrous or sparsely pilose branchlets. Leaves mostly 3-4 mm long, closely set, ovate-lanceolate, lanceolate, linear-lanceolate or acicular, obtuse or acute, tipped with a slender acumen, tetragonal (at least so in the upper half), almost equal sided, glabrous, erect-spreading, spreading or recurved from the base, usually somewhat incurved above the middle. Stipules occasional, minute. Flowering heads usually 0. 8-1 cm wide, globose or rotund, terminating short branchlets with modified leaves, clustered. Bract and bracteoles shortly overtopping the calyx, spathulate, with long caducous hairs on the dorsal surface. Calyx-tube obconic, clothed with caducous unicellular hairs: calyx-lobes subulate, decurrent on the tube, with a few caducous hairs on the dorsal surface, reaching the middle of the petals. Petals 2-3 mm long, oblong or somewhat spathulate-oblong, obtuse, tapering towards the base, cream-coloured, with 2 keels from the middle to the base. Stamens about twice as long as the petals: anthers 0.75-1.25 mm long, oblong: thecae free 2/3 of their length. Ovary almost entirely inferior, tomentose on the top. Fruit rotund, woody, with projecting angles on the dorsal surface, convex on the ventral surface.
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Shrub, 1.0-1.5 m high. Leaves closely set, erect spreading or recurved from base, usually somewhat incurved about middle, 2-7 x 0.3-1.0 mm, linear-lanceolate to ovate-lanceolate, glabrous, tetragonal, almost equal sided. Inflorescences arranged in a double raceme; globose, 8-10(-14) mm in diam., with ± 100 flowers. Bracts and bracteoles shortly overtopping calyx, spathulate with long, caducous, unicellular hairs on dorsal side. Calyx: tube obconic, clothed with caducous unicellular hairs. Petals 2-3 mm long. Stamens well exserted; anthers 0.75-1.25 mm long. Ovary almost entirely inferior, tomentose on top. Flowering time Nov.-Feb.
Like B. abrotanoides but pilose on young parts, leaves spreading, incurved above middle.