Perennial or biennial, 10-35 cm tall, stem often simple, mealy hairy; scales ovate-lanceolate to oblong-ovate, 6-15mm long. Spikes 5-10 cm long, densely flowered. Bracts ± longer than calyx, (8-) 10-14 mm long; bracteoles shorter than calyx, narrow, linear, free. Calyx 8-12 mm long, teeth hardly longer than tube, triangular-acuminate. Corolla 18-25 mm long, tubulose-infundibuliform, bluish, somewhat, constricted above the ovary at insertion point of stamens, expanded above, oblique to suberect; lobes ovate-obtuse to elliptic-subobtuse. Stamen filaments subpilose below, glandulose near the apex; anthers glabrous. Capsule 6-7 mm long, ovoid; stigma bilobed, dark-coloured.