A suffrutex; all parts densely hairy with long tawny hairs. Crown much branched and woody, producing a number of more or less equivalent erect branches, from protected, hibernating, partly subterrean buds. Protective scales still visible on the base of the full grown branches. Stems subsimple, angular, covered with long, tawny hairs. Leaves subsessile, lanceolate to ovate, 4.5-6.5 cm long, 1.5-2.5 cm broad, pilose on both surfaces more densely so and lighter in colour on the lower face; upper side with distinct cystoliths. Leaves in the inflorescence smaller, glandular-pubescent. Flowers solitary, approximated into more or less distinct terminal spikes. Bracteoles linear to linear-lanceolate, 18 mm long, 2 mm broad, glandular pubescent on the outside. Calyx densely glandular pubescent on the outside, enlarged in fruit. Posticous sepal oblong, tapering to the apex, 7-nerved, 18 mm long, 6 mm broad; anticous sepal like the posticous, but bifid about 1/3 of the way from the apex, lobes diverging; inner sepals linear-lanceolate, 15 mm long, 3 mm broad.Corolla lilac, puberulous; tube 15 mm long, lower part cylindric, upper part broadly funnel-shaped, densely hairy on the inside at the insertion of the stamens; limb subbilabiate, longer than the tube, patent. Filaments hairy at the base; the two perfect stamens with fairly thick filaments ± 9 mm long, anthers large, 7 mm long, imperfect stamens with 3 mm long filaments two bearing rudimentary anthers.Ovary glabrous; style filiform, 25 mm long, exserted; stigma capitate. Capsule glabrous, 2.5 cm long, 1 cm broad.
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Perennial herb, up to 0.45 m high; densely hairy with tawny hairs. Stems annual from a woody rootstock; erect. Leaves subsessile; blade narrowly ovate to ovate, up to 65 x 25 mm, margins entire, flat. Flowers: solitary in terminal spikes; bracts linear; corolla ± 15 mm long, lilac; Aug.-Dec. Fruit 25 mm long.