stout, straight or curved.—Students Fl. 13. R. tenuis, Buch, in Trans. N.Z. Inst. xx. (1888) 255, t. 12.
South Island: Canterbury—Not uncommon on the mountains of the Middle Waimakariri from Mount Torlesse to Bealey, Enys! Kirk! Petrie! Cockayne! T. F. C. Otago—Lake Harris, Kirk; East Taieri, Buchanan! 2000–40OO ft. December–February.
A well-marked species, apparently not closely allied to any other. Mr. Buchanan's R. tenuis differs from the type in the leaves being more pinnately divided, but is clearly the same species. I have a specimen with finely cut, almost decompound leaves, collected by Mr. Cockayne on the Candlestick Mountains, Canterbury.
10. R. tenuicaulis, Cheesem. in Trans. N.Z . Inst. xvii. (1885) 235.—Very slender, erect, sparingly pilose or nearly glabrous, 4–18 in. high. Rootstock slender, with numerous fleshy rootlets. Leaves all radical, on slender petioles 2–6 in. long; blade ½–1½ in. diam., about reniform in outline, cut to the base into 3, rarely 5, broadly cuneate divisions, which are deeply and irregularly 2–3-lobed; lobes narrow, often again toothed. Scape very slender, grooved, 1-flowered, usually with 2–3 simple or variously cut or lobed bracts about the middle. Petals 5, linear, acute. Achenes 5–20, loosely packed, spreading, shortly stipitate, fusiform, gradually narrowed into a long spirally recurved style.—Kirk, Students Fl. 14.
South Island: Canterbury—Mountains above Arthur's Pass, T. F. C.; Craigieburn Mountains, Cockayne! Otago—Swampy Hill, Lee Stream, Mount Kyeburn, Clinton Saddle, Petrie!
A very curious species, remarkable for the fusiform achenes and long spirally recurved style.
11. R. Haastii, Hook. f. Handb. N.Z. Fl. 6.—A very remarkable stout fleshy or coriaceous glaucous plant, 2–6 in. high, glabrous except the leaf-sheaths, which are usually villous with long hairs. Rootstock stout and fleshy, often 6 in. long and as thick as the thumb, viscid and milky when bruised, horizontal, giving off numerous long and stout rootlets as thick as whipcord. Radical leaves 1 or 2; petioles stout, fleshy, tapering downwards, 2–6 in. long; blade 2–4 in. diam., broadly reniform or orbicular in outline, palmately cut to the base into 5–7 deeply and irregularly incised and lobed segments. Scape very thick and fleshy, grooved when dry, naked below, furnished above with 1–3 sessile cauline leaves which are deeply cut into linear lobes, forming a leafy involucre to the flowers. Peduncles 1–3, barely exceeding the cauline leaves, 1-flowered. Flowers 1–1½ in. diam., yellow. Sepals 5, oblong, glabrous or nearly so. Petals 8–15, narrow-cuneate; gland single, basilar. Receptacle swollen, papillose. Achenes forming a rounded head ¾ in. diam., glabrous, turgid; style flattened, pointed, very broad at the base, the margins continued down the front and back of the achene as wings.—Kirk, Students' Fl. 10.
