62 LAWSON : REVISION OF THE 



33. — Ranunculus occidentalis, NuUall. 



" Hirsute, with shining, spreading hairs ; leaves trifid or 3-parted ;• segments cxineate 

 and trifid or incisely toothed, the lateral ones often sub-divided ; the uppermost leaves 

 trifid, with linear acute segments ; stem divaricate, manj^ flowered ; sepals reflexed, half 

 as long as the elliptical oblong petals ; carpels smooth, much compressed, with the 

 revolute style nearly their own length." — Nuit., in Torr. & Grr., Fl. N. Am. 



Ranunculus occidentalis. Nuttall, in Torr. & Gr., Fl. N. Am., I., p. 22, excl. syn. 

 "Gray, Proc. Am. Acad., VIII., p. sn." Watson, Bibl. Index, p. 21. 



R. hispidus. Hook., Fl. Bor.-Am., I., p. 19, in part. 



R. Californiens. Macoun, Cat., No. 50. 



R. acris. Macoi;n, Rep. Geol. Survey Cauad., 18*75. 



Abundant in the vicinity of Victoria, Vancouver Island. — Macoun. Plains of the 

 Oregon River, near woods. — Nuttall. 



34. — Ranunculus Pknnsylvanicus, Linnœus. 



Roughly hirsiite, with strong spreading bristly hairs. Stem strong and erect. 

 Leaves of 3 distinct, slightly stalked leaflets, which are ovate-acute, ternately cleft and 

 toothed, strongly veined. Calyx reflexed. Petals bright yellow, shorter than the sepals. 

 Carpellary heads oval-oblong on an elongated receptacle ; carpels smooth, with short 

 straight beaks. 



Ranunculus Pennsi/lvanicus. Linn, fil., Supplementum Plantarum, p. 2Y2 (1*781). Linn. 

 Syst. Vegt., Litchfield Bot. Soc, p. 442 (1782). Willd., Sp. PI., I., p. 1323. Poiret Diet., 

 VI., p. 120. Biria, Renoue, p. 41 (excl. syn. Poir.). Barton, Comp. Fl. Phil, IL, p. 25. 

 Persoon, Synops., II., p. 104. Sm., in Rees' Cycl., n. 46. Pursh, FL, IL, p. 392. DC. 

 Syst. Nat., I., p. 290. Prod., I., p. 40. Hook., Fl. Bor.-Am., I., p. 19. Back's Exp., p. 523. 

 Torr. & Gr., Fl. N. Am., I., p. 22. Torrey, Fl. New York, I., p. 15. Chapman, Fl. S. U.S., 

 p. 8. Gray, Manual, ed. 5, p. 42. Wood, CI. Bk. & Flora, p. 201. Provancher, Fl. 

 Canad., I., p. 11. Lawson, Ranunc. Canad., p. 35. Watson, Bibl. Index, p. 22. Macoun, 

 Cat., No. 4Y. Hook, f , Arct. PL, p. 283. 



R. Canadensis. Jaccjuin, Miscellanea, IL, p. 343 (1*781). Icoues PL Rariorum, I., t. 

 105 (1*781-86). 



R. trifolius. Mœnch, SuppL, p. '70. 



R. hispidus. Pursh, FL, IL, p. 395. 



Nicolet and Chippewa.— Dr. P. W. Maclagaii. Hinchinbrook, Out., July, 1862; 

 between Kingston and Waterloo, Out., 25th July, l%m.—Laivson. Belleville, abundant in 

 wet waste places. — Macoun. Prescott district, wastes, common. — B. Billings jr. St. 

 Joachim. — Provanclier. Fort Simp.son, June. — McTavish. Fort Garry, July, 1861. — Dr. 

 Schultz, sp. No. 126. Lake Winnipeg.— £(7cA:. To lat. {j1\— Hooker. West to the Pacific— 

 Torr. Sf Gray. Nepean.— J5. Billings jr. Athabasca.— iZ. King, Back's Exped., 1833-4. 

 Pictou, N.S.— ilft-'Ao^. Wet places. New Brunswick, rather rare. — Foiuler. Gaspé, Rivière 

 du Loup, district of Montreal and River Rouge, P.Q. ; Ottawa ; St. Catherines, Toronto, 

 Ont. ; wooded country to the Rocky Mountains, through British Columbia to the Pacific. — 



