Perennial forming lax to rather compact patches up to c. 15 cm. diam.; stems us. several, up to ± 15 cm. long, arising from a simple or branched stock, decumbent at base, then erect or ascending, slender. Lvs ∞, crowded at base of stems and branches, dark green, glossy above. Basal and lower lvs ∞, crowded, sessile or subsessile, with several minute scales at base, ± 8-15 × 2-3 mm., narrow-spathulate to narrow-elliptic to sublanceolate, rather thick and coriac. Upper cauline lvs similar, shorter, in 2-4 distant pairs. Infl. terminal and subterminal, fls paired or in threes or occ. solitary; bracts paired, similar to upper cauline lvs. Calyx c. 8 mm. long, cut ? way or more into narrow-triangular or subulate to subacuminate lobes. Corolla white, ± 12 mm. diam. and long, sub-campanulate, cut ? to 3/4 way into oblong- to broad-obovate obtuse lobes.