Leaves 1.5–10 x 0.1–0.65(0.9) cm., linear to linear-oblong or narrowly oblanceolate, apex obtuse, short apiculate, attenuate to subsessile or sessile base, sparsely long glandular-hirsute above, very sparsely hispid on major nerve beneath, ciliate especially below; midrib thickened, prominent beneath, at least lower part persistent, spinescent.
Low, usually stunted, dwarf shrub, up to 228 mm tall, densely caespitose. Leaves narrowly oblanceolate or linear, narrowed at apex into an apiculus. Calyx deeply lobed. Flowers sessile or subsessile, not exceeding leaves, purple.
Corolla up to 2.5 cm. long, bright deep blue to violet, darker at throat, sparsely and usually shortly glandular-pilose without, lobes subequal, broadly obovate.
Lower stamens more than half as long as corolla tube; anthers pilose; style hairy below, slender, exceeding corolla tube.
Calyx c. 8 mm. long, lobes 5–7 mm. long, narrowly linear-lanceolate, acute, prominently 1-nerved, long pilose-ciliate.
Plant usually prostrate, branched or rarely densely tufted under-shrub; branches 2–15(40) cm. long, densely leafy.
Flowers sessile to subsessile; bracts to 7 mm. long, 1 mm. wide, narrowly linear.
Capsule c. 5 x 4.5 mm. laterally compressed-obovoid, pubescent; seeds black.
Ovary compressed-ovoid, glabrous.