486 GEOLOGICAL SURVEY OF CANADA. 



42. CARDAMINE. 



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(125.) C. rotund ifolia, Michx. The specimens referred to this 

 species should be included in C. rhomboidea and var. purpurea placed 

 under it as a variety of that species. The mistake was made by mis- 

 understanding Torrey & Gray, when describing these forms. In the 

 above we follow Gray's Manual, but we believe our var. purpurea will 

 yet constitute a good species. 



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(129.) C. pratensiS, Linn. Along Becscie River, Anticosti. 

 (Macoun.) Cape Chudleigh, Ashe's Bay, Upper Savage Islands and 

 Digge's Island, Hudson Strait. (R. Bell.) In bogs, Lake Mistassini. 

 (J. M. Macoun.) All the arctic specimens have purple flowers. 



(130.) C. hirsuta, Linn. var. sylvatica, Gray. On the slopes of 

 Cathedral Mountain at Hector, Rocky Mountains, and at the Selkirk 

 summit, Lat. 51. (Macoun.') Flathead River, B.C. (Dawson.) This 

 form approaches very closely to C. oligosperma, in the shape of its 

 leaves. 



43. ARABIS. 



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(133.) A. petrsea, Lam. On clift's of Minister's Pace, 1ST. B. 

 ( Wetmore.) Abundant on gravel bars at the mouth of Jupiter River, 

 Anticosti, 1883. On sand at the mouth of the Kananaskis, also abun- 

 dant and very fine at Kananaskis station in the Bow River valley, 

 Rocky Mountains, 1885. (Macoun.) 



Var. ambigua, Regel. On sand along Six Mile Creek, and on 

 Bear Creek, within the Selkirk Mountains, B. C., 1885. (Macoun.) 

 Iltasyouco River, B. C. (Dawson.) Lake Lindeman, source of the 

 Youcon River. (Schwatka.) Keneshow Island and Chilcat Harbor, 

 Alaska. (Meehan.) 



(136.) A. Holbcellii, Hornem. Trap rock at the mouth of the 

 Blackwater River, Lake Nipigon. 1884. (Macoun.) 



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(138.) A. Drummondii, Gray. Steep bank, head of Ellis Bay, 

 Anticosti, 1883. (Macoun.) Sand dunes at Point Abino, Lake Erie. 

 (David F. Day.) 



