Low-growing tuberous perennial. Tuber 8-20 mm in diameter. Stems several, prostrate-ascending, 10-25 cm, forming loose mats, slender, branched or not, finely puberulous to villous with ± retrorse white hairs, usually eglandular throughout, leafy. Leaves concolorous, green, broad triangular-ovate, 5-20 x 5-15 mm, broad truncate to cordate, serrulate to serrate, acute, finely eglandular pilose to villous, with few or no sessile oil glands abaxially; petiole 5-15 mm on lower leaves; tufts of younger leaves often present in leaf axils. Inflorescence a terminal compact ovoid or cylindrical head, subtended or not by uppermost leaves; rarely lowermost verticillaster separate. Inner bracts linear-subulate, c. as long as calyces. Calyx often purplish, 6-7 mm, tubularobtriangular, eglandular pilose to papillose-glandular; throat almost straight; teeth somewhat unequal, narrow triangular to linear triangular, 1/2 to as long as tube, ciliate. Corolla mauve to purplish, 7-11 mm; tube shortly exserted, slightly expanded at throat; upper lip straight or hooded; lower lip somewhat longer than upper, recurved. Nutlets 1-1.2 x 0.8-1 mm, light brown, broadly ovoid-suborbicular, not trigonous, shiny, with a small basal transverse areole.