Wahlenbergia calcarea (Adamson) Lammers

Sprawling or procumbent, much branched. Stems covered with short stiff hairs but not woolly. Leaves fasciculate, usually crowded, spreading, squarrose, revolute-rolled, green, 4-8 mm long, usually glabrous, distinctly narrowed to the base, mucronate at the tip, with 1, 2 or 3 pairs of lateral teeth near the base. Flowers almost sessile, in groups of 2-5, the groups on long or short usually corymbose branches. Bracts like the leaves but longer and more prominently toothed. Calyx lobes rigid, revolute rolled, 2-5 mm long, with slender teeth near the base. Corolla white, often blue-purple outside, 8-15 mm long, the tube slightly shorter than the calyx lobes, the lobes glabrous or very thinly hairy. Bases of the filaments oblong or oblong-spathulate, ciliate. Style purple, thickened in the upper part. Ovary inferior, about twice as long as wide, 3-4 mm long, rounded at the base. Fruit with valves much shorter than the spreading calyx lobes.