344 THE CANADIAN NATURALIST. [Sept. 



Central and Western Asia, China and Japan"' where its habi- 

 tat is said to be "high-arctic and sub-arctic regions, Caucasus 

 '•to Kamtschatka, Manchuria, and Amur; '^ — and then in two of 

 the N. A. areas. The last forty pages of the book are occupied bj 

 a systematic catalogue of all the species, with the occurrence off 

 each throughout these eighteen areas tabulated in parallel columnsj 

 North America is botanically deemed to go no further south than- 

 the northern Mexican boundary and is divided into three areas : — 

 1st, British America east of the Rocky mountains, and Greenland,. 

 2nd, the United States east of the Eocky mountains and Bermuda!,, 

 and 3rd, the territory west of the Bocky Mountains from Alaskas. 

 to the Mexican boundary. As the two first are not botanically/ 

 separable by any geographical line perhaps that chosen by Mrs^ 

 Lyell is as good as any. Of the forty-four species given as^; 

 occuring in the Canadian division, four have probably beeni 

 inserted without sufficient authority ; Woodsia scopulhia, Loma-- 

 via Spicaut and Pohjpodmm cdpestre are known only from the 

 west side of the Rocky Mountains, and the occurrence oiAsplcnium 

 marinum in New Brunswick still awaits rerification. On the 

 other hand nine undoubted natives have been omitted, some of 

 them through an inadvertence as Mrs. Lyell informs me i tbey 

 are, — . 



Uhcilanthes gracilis (" base of the 

 Kocky Mountains, Aug. 13, 

 ]858," Bourgeau no. 3689 in 

 Herb. Hook.'*), 



Pteris aquilina, 



Woodwardia Yirginica, 



Scolopendrium vulgare, 



TVoodsia Oregana (Lake Winnepeg 

 and westward;. 



A«pidiiun Louebitis, 

 ISTepbrodium iSToveboracenj^e, 

 BotrycbiiimmatricariaifuliuniJ.jBr 

 (iueluding B. lanccokitum 

 and=^. rutaceam in Syn>. Fil.- 

 of Hooker, bat not of Swartz),^^ 

 and 

 Ophioglossum vulgatum. 



Of these forty-nine species at least twenty are common to both 

 sides of the Rocky Mountains, all of which (with a doubt as to 



* Prof. Eaton was kind enough to trace out the exact locality for me 

 — " AYiudy mountain near Lacs des Arcs, jST. lat. 51 ^ 1' 44, vide 

 Dr. Hector's journal m the ' Blue Book' on Capt. Palliser's Expedition. > 

 This station is probably its northern limit. In the U.S. it occm-s on both 

 sides of the Kocky mountains and as far south as Arizona fHerb. Eaton) 

 and Xew Mexico (Cb. Wright nos. 818, 2125;. It is the Ch. vestita of 

 Hook. n. Bor. Am. ii, p. 264 and Sp. Fil. ii, p. 98, the Cli. lanufjinosa of 

 Gray's Manual. 



