256 OKOl.lXilCAl, SUUVKV tM' CANADA. 



(11:m.~) a. Canadensis, Mi<li\. 



A- CiintjHUtris, Pni-sli l"l. 1 1 , T)".'!. 



.1. ihiurtoritiii. UddU. II. I., ;'i'J.">. in |)mi(. 



Aloiiy; son l>i>;n'lu'- aii'l tin l.ikr sIkhts mikI Ii\' rivtTs (Iiroii^'lioiil 

 Canaila. On <;;i"i\"i'll\ fiili:;rs and sand dinu's on I lie |iiairic.s and open 

 iilains and lliniui;li lln- Rocky Mountains cxlcnilini;- to llic I'acilir. 

 t'oasl. i^Maroun.) Fioni llmlson l>ay acioss llu' wooded (■oiintry 

 noi-tliward to tlii' Arctic Circle and wi'.^t to the PaciHc. {Ifooker.) 



(11!»5.) A. caudate, Midix. 



llaltWay Island, hrtidil i;i\ cr. Onl. (Maclagan.) On dry exposed 

 ridiTOs wi'steiai plains. On gravel iidi;'e west of lAnt. Ellice, Man. 

 (JIacoun.) 



(^irjti.) A. cana, Pnrsli. Sao-o Brush. 



Plains of tlu' Saskatchewan. (DruminoHd.) Fnnn tlic conlhiencc, 

 of the Assinihoine and (.^Mi'Apj)ello on arid clay or dry sand south- 

 wcstwardly across tlic plains. Common westward from Old Wives 

 Lakes to Calg-aiy, and souih to the 4ntli pai'ailel. (Macoun.) 



(119T.) A. tridentata, Xntt. 



On very arid soil. Whei'e this plant grows the soil needs irrigation. 

 It is altogether unknown north of the dUlh ])arallel, east of the Rocky 

 Mountains. (Macoitn.) Flathead River, B.C. (Dau-son.) 



(1198.) A. triflda, Nntt. 



On very ai-id soil from. Spenees Biidge to Cache Creek, interior of 

 British Columhia. (^Ilill & Fletcher.) Along the shore of Osoyoos 

 Lake, B.C. {Dawson.) 



(1199.) A. longifolia, Xntt. 



On arid day hanks of Ribstoiie and Stoney creeks, east of Hand 

 Hills, also at Old Wives Lakes and north of Cypress Hills, apparently 

 rare, but possihl}^ overlooked. {Macoun.) 



(1200.) A. discolor, Dough 



A. Ludovidaiia, Bess. Hook. FI. I., 322. 



Eocky Mountains, and Arctic America. {Richardson.) Bow Eivcr 

 Pass, Eocky Mountains. {Macoun.) South Kootanie Pass, -19th paial- 

 lel ; Nicola Valley, B.C. {Dawson.) On rocky banks at Yale, B.C. 

 {Macoun.) Spence's Bridge, B.C. {Fletcher & Hill.) 



