Perennial herb. Stems several, erect, 30-60 cm arising from a tuberous or fusiform rootstock, branched or not, leafy, with an eglandular indumentum of short adpressed retrorse hairs or ± glabrous. Leaves linear, 25-90 x 1.5-5 mm, sessile, ± cuneate, entire-margined, acute, below with a ± dense eglandular indumentum of short or long hairs and with sessile oil globules. Inflorescence an ovoid head or an oblong spike, continuous or interrupted, to c. 4 cm long. Inner bracts linear-subulate, ciliate, shorter than calyces. Flowers congested. Pedicels 1-2 mm. Calyx 9-10 mm, purplish, tubular-obtriangular, eglandular-pilose; throat straight, glabrous or villous within; teeth subequal, c. 1/2 to as long as calyx tube, acuminate, spinulose, ciliate. Corolla lilac to purplish pink, 12-15 mm; tube exserted, slightly curved; upper lip hooded. Mature nutlets not seen but in juvenile state smooth, shining, oblong-orbicular.