A perennial deep-rooting rhizomatous scree plant with distant rosettes of very thick, glaucous, (sometimes yellowish) sessile leaves, glabrous or pubescent. Leaves 8 × 5—25 × 15 mm, spathulate, obtuse, narrowed to a thick flat petiole; margins entire, thickened, cartilaginous. Scapes 2-3 cm long, stout, glaucous, with 1—3 small bracts, usually simple and stiff. Flower c. 12 mm long, 8—12 mm diameter, lilac, scented. Corolla broadly funnel-shaped, 5-partite, tube c. 5 × 6 mm, lobes c. 7 × 5 mm, enclosed within the large calyx lobes which are thick and coriaceous, glabrous, linear-oblong, obtuse, 6 × 2 to 10 × 3 mm. Capsule glabrous, often glaucous, globose to broadly turbinate, c. 8 × 8 to 10x10 mm. Seeds larger than in other species, 1 mm long, ellipsoid, glossy brown when mature. Insect-pollinated. FL Dec—Jan, FT Jan—Mar.
[Reproduced from Petterson (1997, New Zealand J. Bot. 35: 9–54) with permission from The Royal Society of New Zealand.]