CATALOGUE OF CANADIAN PLANTS. 49 



Capt. Sir John Franklin and Capt. Back, to the west of Mackenzie Eiver. 

 Frequent on the shores of Kotzemio Sound and the adjacent coast. 

 (Hooker.) 



(166.) P. arctica, E. Br. Arctic Parrya. 



On the eastern Arctic Islands. {Parry.) Shores of the continent of 

 Arctic America, eastward of the Mackenzie River. {Richards.) 



(167.) P. arenicola, Hook. 



Eutrema arenicola, Eiohards. Ilook. Fl. I.,H7. Torr. & Gray Fl. I., 112. 



Peep sand upon the shores of the Arctic Sea, between Long. 107° and 

 150°. (Richardson.) 



50. HESPERIS, Linn. (GARDEN ROCKET.) 



(168.) H. matronal is, Linn. Sweet Eocket. 



Montreal. (McGUl OoU. Herb .) Shores of Lake Huron. (Dr. Todd, 

 vide Hooker.) Spontaneous in many old gardens and along old fences 

 in Prince Edward County and at Belleville, Ont. Hooker's reference 

 to Lake Huron can only apply to a garden escape. 



51. DRABA, Linn. (WHITLOW-GRASS.) 



(169.) D. alpina, Linn. Alpine Whitlow-grass. 



From Lat. 60° on the Eocky Mountains, to the shores of the Arctic 

 Sea,and on the islands adjacent, where it principally abounds. (Hooker.) 

 Eocky Mountains. (Bourgeau.) On limestone mountains in the Bow 

 Eiver Pass. (Macoun.) Kotzebue Sound. (Roth. Alash.) Greenland. 

 (Hooh. Arct. PI.) 



Var. hebecarpa, Lindb. (Hairy-podded variety.) 

 D. alpina, var. /l, Hook. Fl. I., 50. 



Summit of Stuart Lake Mountain, B. C, 1875 ; top of Mount 

 Selwyn, Peace Eiver Pass, Lat. 56°; Bow Eiver Pass, Lat. 51°. 

 (Macoun.) Summit Camp, Pine Pass, 2,850 feet, Lat. 55°. (Dawson). 

 Greenland. (Hooh. Arct. PI.) 



Var. algida, Eegel. 



D. algida, Adams. Hocik. Fl. I., ,50. 

 D. paudflora,'R. Br. Hook. Fl. I., 51. 



Sea coast between the Mackenzie and Coppermine Elvers. (Richard- 

 son.) Melville Island. (Sabine^ Barrow Eiver. (Parry.) West of 



