Perennial herb, 10–50 cm. tall, ± erect from a decumbent base.. Stems few-many, ribbed, glabrous to ± sparsely appressed pubescent.. Leaves oblanceolate or spathulate, up to 12–45 mm. long and 3–9(–12) mm. wide, subacute to rounded at the apex, attenuate below into a petiole-like base, glabrous or ± sparsely appressed pubescent on both sides, crenate-serrate; venation distinct beneath.. Flowers in lax 2–13-flowered pedunculate racemes; pedicels 3–15(–27) mm. long, erect in fruit, strigose; bracts lanceolate to narrowly ovate, 2–7 mm. long, entire, ciliate; bracteoles usually at or near the base of the pedicel, but sometimes higher up, linear-lanceolate, 1.2–2.4 mm. long, ciliate.. Hypanthium broadly obconical, somewhat oblique, ± 8-nerved, strigose.. Calyx-lobes narrowly triangular, 2–4 mm. long, entire, glabrous to shortly ciliate, somewhat gibbous at the base.. Corolla (11–)13–18 mm. long, pink, mauve, purple or rarely blue or white, with 2 longitudinal yellowish or whitish crests in the mouth of the tube, split to the base on the back, glabrous or usually at least with a few hairs on the outside of the upper lobes, papillose inside near the mouth of the tube; lower lip 5–10 mm. long, with obovate lobes 2–4 mm. wide; upper lobes lanceolate, recurved, 3–4 mm. long.. Filaments connate above, attached to corolla-tube at the base, densely pubescent on the inside in the upper part, otherwise glabrous or the 2 lower filaments puberulous at the base.. Anther-tube 2–2.4 mm. long, all anthers densely hairy at the apex, otherwise glabrous or rarely sparsely pilose on the connectives on the back.. Ovary semi-inferior.. Capsule ± 8-nerved, strigose, with 2 valves 2–3.5 mm. long.. Seeds ± broadly elliptic in outline, trigonous, 0.8–1 mm. long, very finely reticulate, dark brown.. Fig. 3.
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