17 1 flEOLOOICAL 8URVF.V OF CANADA. 



199. CLARKIA, Pursh. (CLARKIA.) 

 (sr.'.) C. pulchclla, l'm>li. 



l-'rom llic <iic;il l'';ilU <>l (lie ( 'i>liiiiilii;i to tlic llocUy Mountains. 

 (/>«»<//(/.s.) Noar Osv)y«)us LhUc, sKulln'iii Imiindaiy ol' IJrilisIi ( "oliiin- 

 l)ia. (^Dturson.) 



200. BOISDUVALIA, Spach. (BOISDUVALIA.) 



(^SKi.) B. densiflora, WaiMin. 



iKiinili, III ill iisijliii-ii, l^iiidl. Toir. iV (iniy, I'M. I., .'')'>.'). 

 \':iininivt'r IsImikI, near Victoria. (Dawson.) 

 (Sll.) B. glabella, Waii*. 



iEmthm ijlahdh, Nutl. I'm r. ct Gray, Fl. I., 505. 



Pilo of Bones Ci-oek, Sonris Plain ; Woody Lake, west of Old Wives 

 Lakes and on tlie Cypress Hills, N.W.T. {Macoun.) 



20I. CAURA, Linn. (GAURA.) 

 (815.) C. coccinea, Nutt. 



G. martjinata, Ijchin. Hook. Fl. I., 208. 

 G. glabra, Lohm. Hook. Fl. I., 200. 



Plains of the Red and Saskatchewan Eivcrs. (Drurmnond, Douglas.) 

 A1»unilant near Brandon and westward, on gravelly bardvs throughout 

 the prairie region. {Macoun.) Badger Creek; dry banks, Wood End, 

 Souris liiver ; and westward to the mountains, Lat. 49°. (Dawson.) 



(816.) C. biennis, Linn. 



Dry baidvs. Motfatt's Island, Montreal ; Maiden, Ont. (Maclagan.) 

 About Montreal. (ClegJwni.) 



202. CIRCCEA, Tourn. (ENCHANTER'S NIGHTSHADE.) 



(817.) C. alpina, Linn. 



Common in damp, shady woods, from the Atlantic to the Pacific. 

 Sitka. (Rothr. Alask.) This is wholly a forest species. 



