Wahlenbergia albomarginata Hook.

Perennial herb with radical, rosulate tufts of leaves, sometimes alternate on elongated stems (shade form). Leaves more or less petiolate, entire or dentate or undulate, lamina 10 × 2 to 40 × 10 mm, linear to elliptic or ovate to obovate, gradually narrowed to petiole as long as the lamina or longer. Flowers narrowly campanulate-rotate, corolla pale flax blue to pale blue-violet, often with white zoning and deeper coloured veins, or all white, 10—25 mm diam., 10—20 mm long, corolla tube 4 × 3 to 10 × 6 mm, lobes 6 × 3 to 12 × 5 mm; style equal in length to corolla tube, lobes 2 or 3. Calyx lobes less than VA corolla length; capsule domed cylindric, 6-8 × 4 mm. Seeds 0.5 mm long, ellipsoid, smooth, glossy brown when mature. Usually insect-pollinated in natural habitat, seldom sets seed in cult. FL Nov—Apr, FT Dec—Apr.

[Reproduced from Petterson (1997, New Zealand J. Bot. 35: 9–54) with permission from The Royal Society of New Zealand.]