i,ATALOQUE OF CANADIAN PLANTS. 305 



(307fi.) S. siNAPiSTRTJM, Oantz. 



S. Pannonicum, Jseg. 



This species has been introduced in a number of places along the 

 line of the Canadian ]pacific Eailway. Castle Mountain, Rocky Moun- 

 tains, 1885. (Macoun.) Near Nepigon Bridge, Lake Superior, 18S(). 

 {Fletcher.) At Port Arthur, Thunder Bay, Lake Superior, 1889. {Dr. 

 Britton.) On an embankment along the C. P. Ey., about 300 yards 

 west of Burketon station, 45 miles east of Toronto, 1889. {W. Scott.) 



51. DRABA. 



(173.) D. Fladnizensis, Wulf. ; Watson, Proced. Amer. Acad., 

 XV., 258. 



Eeferences under JJ. androsacea, Part I., 51, belong liere. 



(ITe.) D. incana, Linn. var. arabisans, Watson; Gray, Man., 

 ed. VI., (57. (1890.) 



D.arahimns,M\ch-s.; Macoun, Cat., I.,52 ; Gray, Man., ed. V., 71. (1867.) 



Draba incana is described in Gray's new manual as having oblong to 

 lanceolate pods which are generally acute and straight and often ^^M^e- 

 scent, while those of var. arabisans are glabrous, acuminate or acute and 

 twisted. 



54. LESQUERELLA, Watson, Proced. Amer. 

 Acad., XV., 249. 



(187.) L. Ludoviciana, Watson, Proced. Amer. Acad., XV., 252. 



Vesicaria Ludoriciana, DC. ; Macoun, Cat., I., 54, in part. 



All the prairie references in Part I., belong here. The specimens 

 from British Columbia to the next. 



Var. arenosa, Watson, Proced. Amer. Acad., XV., 252. 



Ve.nca7-ia arrnout, Kichards. in Frank. Journ., 26. 



Watson places this in the Saskatchewan region, but if V. arenosa is 

 a correct reference, then its habitat is "on a hill 700 feet high at Bear 

 Lake Eiver," Lat. 65°. This is the station mentioned by Eichardson 

 in Hooker's Flora, Bor. Am., I., 48. 



