A small shrub 10-23 cm high, with simple branches arising from the apex of a thick underground stem, rarely branched above. Branches terete, pubescent. Leaves erect, 0.4-1.5 cm long, 0.5-2.5 mm broad below, linear or ovate-linear, obtuse, half-clasping at the base, with recurved and denticulate margins and a distinct midrib beneath, glabrous. Flowers axillary or terminating very short lateral shoots. Pedicel up to 1.5 mm long, elongating slightly in the fruit. Calyx-tube 1-2 mm long, campanulate, 10-nerved, 5-angled, glabrous; lobes 2-3 mm long, linear or ovate-linear, acuminate, subacute, longer than the tube, with cartilaginous margins, entire or 1-4-toothed, glabrous. Corolla-tube 1.5-2 mm long, glabrous; lobes 5-6 mm long. 1-1.25 mm broad, linear, subacute, glabrous. Stamens inserted at the base of the corolla-tube; filaments 1.5-2 mm long, ovate or orbicular and ciliate below, filiform above; anthers 1.75-2.5 mm long, linear. Ovary enclosed in the calyx-tube, 1.5-2 mm long, subglobose, 3-celled; style 5-6 mm long, terete, usually thickened above, glabrous; stigmas three, 1 mm long, linear or oblong.
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Erect or sprawling dwarf shrub, up to 0.5 m high. Leaves many, all similar, ascending, crowded, linear, margins cartilaginous, denticulate. Flowers: subsessile, crowded in upper axils; corolla with distinct tube, pale blue with tinge of violet; Nov.-Apr.
Erect or sprawling shrublet, up to 500 mm tall. Leaves all similar, ascending, crowded, fasciculate, linear, 7-15 x 2 mm. Flowers white or pale blue.
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