28 LAWSOIST: EBVISION OF THFi 



Arctic Sea. — Richardson, in Hook., Fl. Bor.'Am. York Factory, a large number of specimens 

 collected during successive seasons. — Governor McTavUh. Unfortunately special localities 

 are not given on the labels of McTavish's specimens, the district being indicated merely by 

 the letters " Y. F." Low ground along the eastern base of the Porcupine Mountains, aboiTt 

 lat. 53°; Manitoba ; McLeod Lake, lat. 55", B. C.—Macoim. 



6. — Thalictrum anemonoides, Michaux. 



Eoot of few fleshy tubers ; radical leaA^es few ; long-stalked, ternately compound, 

 with stalked leaflets ; cauline leaves similar, forming an invokicre. Plant five or six 

 inches high, with habit and foliage of Isopyriivi, flowers of Anemone, and fruit of Tlialictrum, 

 DC. 



Tlialictrum anemonoides. Michaux, Fl. B. A., I., p. 322, (1803.) DC, Syst. Nat., L, p. 186. 

 Prodromus, I., p. 15. Hook., Fl. Bor.-Am., L, p. 4. Torr. & Gr., Fl. N. A., I., p. 39. Gray, 

 Gen. 111., I., p. 24, t. 6. Manual, ed. 5, p. 38. Chapman, Fl. S. TJ. S., p. 6. Watson, Bibl. 

 Index, I., p. 25. Macoun, Cat., No. 19. 



Anemone thnlictroides fS. Linn., Sp. PI., p. *763. 



Anemone thalictroides. Bigelow, Fl. Boston, p. 136. Pursh, Fl , II., p. 38*7. Aiton, 

 Hort. Kew. Bot. Mag., t. 866. Persoon, Synops. PI., IL, p. 98. Pursh, Fl., p. 38t. 



Si/ndesmon thalictroides. HofFmansegg, in Flora, 1832, Intell. Blatt., p. 34. Lawson, 

 Rauunc. Can., p 31. 



Anemonella thalictroides. Spach, Hist. Veg., VII., p. 240, (1839.) 



Canada. — Kalm, Michaux. St. David's, Niagara District, Ont. — Dr. P. W. Muclagan. 

 Oaklands, Hamilton, Ont., 31 May, 1859. — Judge Logie. Vicinity of Niagara Falls and 

 Pelee Island, Lake Erie. — Macoun. 



[T. PURPURASCENS, Linnceus. Attributed by Liuuœus to " Canada," in the Species 

 Plantarum, has not so far been satisfactorily identified as a Canadian species, although 

 reported several times. It ap^Dears to be a southern plant, well knoMai to Dr. Gray, who 

 gives a full description of it in the Manual, 5th edition, p. 31>. T. dioicum is freqtiently tinged 

 with purple on the upper part of the stem, leaf stalks, &c., and such forms have been mis- 

 taken in Canada for T. purpuruacens. It is very desirable that all suspicious forms of Tlialictra 

 should be collected, especially in the southern peninsula of Ontario, whence Dr. Burgess 

 reports this species, but I have not had opportunity of examining his specimens.] 



Genus III.— ANEMONE, Linnceus. 



Bentham and Hooker, Genera Plantarum, I, p. 4. 

 List of species : — 



Section 1. — Involucre of three simple leaves close to the flower, resembling a calyx. 

 Hepatica. ^ Dillenivis. Linn. DC. Gray. 



1. A. Hepatica. | 2. A. acutiloba. 



Section 2. — Involucre much divided, distant from the flower ; achenes with long plume- 

 tails. Pulsatilla. Tournefort. DC. 



3. A. patens. | 4. A. occidentalis. 



