CANADIAN EANUNCULACE.îî. 39 



Prodromus, I., p. 21. Maximowicz, Prim. Fl. Amur., p. 18. Regel iu Radde'sReisen, I., p. 

 17. Lawsou, Trans. Bot. Soc. Ediu., X., p. 34G. Rauunc. Cauad., p. 24. Watson, Bibl. 

 Index, I., p. 3. Maconn, Cat., No. 14. 



A. Pennsijlvanica. Linn. Mant. II., p. 24*7 (1767). Aiton, Hort. Kew., ed. 1, II., p. 256. 

 Pursh. n., p. 387. DC. Syst. Nat., I., p. 209. Prodromus, I., p. 21. Richardson in 

 Franklin's Jour., 13. Torrey, Flora New York State, I., p. 19, t. 4. Hook., Fl. Bor.-Am., 

 I., p. 8, t. 3, f. B. Torr. & Gr., Fl. N. A., I., p. 14. Gray, Gen. 111., I., p. 20, t. 4. Manual, 

 5 éd., p. 37. " PI. Bourgeau, 254." Matthew, Canad. Naturalist, ser. 2, XII., p. 158. 



A. Canadensis. "Linn. Syst., ed. 12, III, App. 231." 



A. irregularis. "Lam. Diet., I., p. 167." 



A. aconitifolia. Michaux, Fl., I., p. 320. Persoon, Synops., IL, p. 97. 



Linnœus described as two species, A. diclwtoma, Eu.ropean, in 1749, and A. Pennsyl- 

 vanica in 1767, for which latter the only habitat given was " Canada." De OandoUe pointed 

 out that the KraQriG&nPennsylvanica was similar to the European dichotoma, but more slender. 

 Hooker found Dahurian s^jecimens to " entirely accord with the American ones," but in 

 Fl. Bor.-Am. retained the name Pennsylvanica. 



In woody and prairie tracts by the banks of rivers, from Hudson Bay to the Pacific, 

 and from the United States to near the mouth of the Mackenzie River ; not found in the 

 barren grounds. — Richardson^ Drummond, Douglas. Lake Winnipeg and Slave Lake. — R. 

 King, Back's Exped. Head of Lake Winnipeg, 1879.— Pro/. Bell. 



Hardwood Creek, 1861, also Portsmouth, and elsewhere about Kingston, Ontario, 

 June 4, 1859 ; Frankville, Kitley, 5th July, 1862 ; near Toronto, 2nd June, 1862. — Lawson. 

 Carroll Point, Hamilton, 7th July, 1859. — Judge Logie. Prescott, Ottawa, &c., common 

 over the country. — B. Billings Jr. Lake Superior. — Prof. Bell. Chippawa and Maiden, Ont. 

 — Dr. Madagan. Belleville, common amongst rocks along rivers. — Macoun. Gaspé, banks 

 of Dartmouth River, June 17, July 5. — Dr. J. Bell. Anticosti, July 18, 1861. — Verrill, 

 From the Northwest, I have received specimens as follows, viz. : From Governor Mc- 

 Tavish: Mackenzie River, above Fort Simpson, 22nd June; Saskatchewan, 19th July; 

 Lake Nipigon, 1853 (sepals silky) ; Mackenzie Eiver, between Fort Simpson and Slave 

 Lake, 21st Ju.ne, 1853. Lake Superior. From Dr. SchuUz : specimens from Fort Garry, 

 July and August, 1860 ; between Wild Rice River and Red Lake River, Sept. 1860 ; Assi- 

 niboine River, July, 1861, sp. No. 62. Lake Winnipeg and Slave Lake. — Capt. Back. 

 Provancher, seems to find the plant rather rare in Quebec Province. Truro, N. S. — Dr. 

 Cavipbell. Along the St. John River and tributaries. — Fowler. Jacket River. — Lawson. 

 Gaspé; valleys of the Rocky Mountains. — Macoun. Restigouche. — Mr. Chalmers, Fowler's 

 List. Jupiter River, Anticosti, Aug. 28, 1883. — Macoun, iu Herb. Canad. Survey. In the 

 States it is confined in range to " West New England to Illinois and north westward " 

 (Gray), whilst in British America it is widely spread, extending from the Atlanti(> Coast 

 west to the Pacific, and northwards nearly or quite to the Arctic Ocean. Mr. Barnstou 

 indicates its range thus : Throughout the extent of the British T(Mritory eastward of 

 the Rocky Mountains, and even westward, though less plentifully. 



Cultivated in England in 1768, by Mr. Ph. Miller, flowering iu May and June. Mill., 

 Diet., ed. 8., n. 7, (Hort. Kew. ed. 2). 



