CANADIAN EANUNCULACE.T}. 57 



Arctic Sea coast between 1*70" and 140'. — Richardson. About Behring Strait on Chamisso 

 Island, and that of St. Lawrence. — Cliamisso. Melville Island. — Parry. Shores of the 

 Arctic Sea, between Mackenzie Eiver and Coppermine River. — Richardson. Labrador. — 

 Parsh. Top of Mount Selwyn, Peace River Pass, lat. 56°.— Mucoun. Rocky Mountains 

 near the 49th parallel, GOOO ft. — Dr. G. 31. Dawson. Akatont, Jacobshavn, Christianshaab, 

 Illartlek, and Claushavn, Disco Bay, 186Y. — Brown. Kotzebue Sound. — Hook. Sj- Ariiott, 

 Bot. Beechey. — Rothrock. East shore of Baffin Bay (west coast of G-reenland), extreme 

 north and south limits observed : lat. *72' 48' : 69' lô' ; especially common at Upernavick. — 

 Harf, British Polar Expedition, 18*75-6. Unalaschka. Spitzbergeu. Scandinavia. The 

 Tyrol. This is one of Sir Joseph Hooker's " most arctic " plants, being found far north in 

 all the five Areas into which he divides the Arctic Region. 



Hooker and Thomson point out, as the result of their examinations, that R,. pygmœus 

 differs from R. hyperboreus only in the want of stolons. In Sikkim both the erect and 

 stoloniferous forms occur, and Sikkim specimens cannot be distinguished from those of 

 the north of Europe. Walpers, Annales, IV., p. 19. See also Flora Indica, I., p. 32, and 

 Hooker's Oixtlines of Distribution of Arctic Plants, Linn. Trans., 1860, p. 312. 



zo. 



-Ranunculus nivalis, Linnœus. 



Radical leaves long-stalked, cleft palmately into about five broad somewhat ovate 

 obtuse lobes, the middle lobe obovate-cuneiform, narrowed at the base ; cauline leaves 

 palmate, nearly sessile. Flower solitary, sepals covered with matted brown hairs, 

 upper part of peduncle with similar but shorter hairs, petals longer than sepals. Achenes 

 glabrous, their beaks nearly straight. Form of leaf variable. 



Ranunculus nivalis. Linn. Sp. PI., p. ^78, (in part). Grunneri Flora Norvegica, p. 62t. 

 (Itee.) Smith, in Rees' Cyc, n. 38. DC. Syst. Nat., I., p. 2*73. Prod., I., p. 35. Hook., 

 Fl. Bor.-Am., I., p. VI. Regel, Fl. Ost.-Sib., I., p. 39. Fl. Dan., t. 1699. R. Brown, in 

 Parry's 1st Voy. App., p. 264. Richardson, in Frankl. 1st Jour. App., ed. 2, p. 24. 

 G-reville, Memoirs Wernerian Soc, Edin., III., p. 430. Hook., Fl. Bor.-Am., I., p. 1*7. 

 Torr. & Gr., Fl. N. Am., I., p. 20. Hook. & Arn., Bot. Beechey, p. 121. Durand, PL 

 Kane, II., p. 448. Hook, f., Arct. PL, pp. 283 and 312. Lawson, Ranunc. Canad., p. 39. 

 Watson, Bibl. Index, I., p. 21. Macouu, Cat., No. 44. 



R. frigidm. Willd., Spec. PL, IL, p. 1312. DO. Prod., I., p. 35. Hook., Fl. Bor.-Am., 

 I., p. 18 (under R. nivalis). 



R. AUaicus. Laxm., Nov. Com. Acad. Petrop., 1*7*74, XVITL, p. 533, t. 8. Ledeb., Fl. 

 Rossica, I., p. 3*7. 



Lofty parts of the Rocky Mountain chain, lat. 55°. Drummond. Copper Mountains and 

 Arctic Sea coast, in muddy pools which become dry during summer, long. 110°. — Richardson. 

 Arctic coast near the termination of the Rocky Mountains, long. 140°. Sir J. Franklin, Capt. 

 Back. Behring Strait. — Chamisso. Kotzebire Sound. — Lay and Collie, in Beechey's Voyage, 

 Rothrock. West coast of Greenland, betw. lat. V0° and *71°, 1818-20. — W. Jameson. Labrador. 

 — Torrey Sr Gray. Assistance Bay, south-west of Cornwallis Island. — Dr. Sutherland. 

 Tsi-Tsutl Mountains, in muddy pools which become dry during summer, 15th July, 



Sec. IV., 1884. 8. 



