crenate. Flowers large, ¾–1 in. diam., white; pedicels 1–3 in. long. Calyx deeply 5-partite; segments ⅛ in. long, linear-oblong, obtuse, coriaceous, glabrous or the margins alone ciliate. Corolla-tube short and broad, villous within; lobes obovate, retuse. Capsule ⅓–½ in. long, ovoid-oblong.—Handb. N.Z. Fl. 218. O. calycina, Col. in Trans. N.Z. Inst. xxi. (1889) 97.
South Island: Nelson—Mount Franklin, Park. Canterbury—Arthur's Pass, Kirk! T.F.C.; Ashburton Mountains, T. H. Potts! Mount Cook district, T.F.C. Westland—Kelly's Hill, Rangitaipo, Petrie! Franz Joseph Glacier, Haast. Otago—Sounds of the south-west coast, Lyall, Buchanan! Clinton Valley, Petrie! Sea-level to 3500 ft. November–January.
The finest species of the genus. It is allied to the following, but is easily separated by the much stouter and more coriaceous habit, by being nearly glabrous, and by the larger flowers and capsules.
2. O. macrophylla, Hook. Ic. Plant. t. 545, 546.—Erect from a short stout decumbent rhizome, 6–24 in. high, more or less pubescent or pilose with soft spreading hairs, rarely almost glabrous. Radical leaves variable in size and shape, on long petioles; petioles 1–6 in. long, stout or slender, sheathing at the base; blade 1–5 in., ovate or ovate-oblong to orbicular-oblong, obtuse, oblique and cordate or cuneate at the base, crenate, rather thin and membranous, sparsely pubescent or almost glabrous. Flowering-stem erect, rather stout or slender. Cauline leaves 1 or rarely 2 pairs, ovate, sessile. Inflorescence of 3–7 superposed whorls of pedicellate flowers, in small varieties sometimes reduced to a few-flowered terminal umbel. Bracts 3–8 in a whorl, linear-oblong or linear-obovate to linear, crenate. Flowers large, ½–¾ in. diam., white or white with purplish streaks; pedicels ½–2 in. long, slender, erect. Calyx deeply 5-partite; segments ¼ in. long, lanceolate or linear, glandular-hairy. Corolla-tube slightly curved, villous within; lobes obovate, retuse. Capsule ¼ in. long, ovoid-oblong, turgid, membranous.—Hook. f. Fl. Nov. Zel. i. 197; Handb. N.Z. Fl. 218. O. robusta, Col. in Trans. N.Z. Inst. xvii. (1886) 246.
North and South Islands, Stewart Island: Not uncommon in damp mountainous localities from Moehau (Gape Colville) southwards. Sea level to 4500 ft. November–January.
In its fully developed state this is an exceedingly handsome plant. It is perhaps nowhere more abundant than on Mount Egmont, where it was originally discovered by Dieffenbach.
3. O. Colensoi, Hook. f. Handb. N.Z. Fl. 218.—Rhizome slender, creeping; stems erect, 2–9 in. high, pilose with soft spreading hairs. Leaves all radical, on slender petioles ½–1 in. long; blade about the same length, oblong or ovate-oblong, obtuse, subcordate or cuneate at the base, crenate, rather membranous, sparsely glandular-hairy on both surfaces or almost glabrous. Flowering-stem or scape 1–8-flowered; bracts in pairs or rarely in
