Contributions to Canadian Botany. 2r) 



Thysanocarpus pusillus, Hook. 



Common in parts of Vancouver Island but not found in 

 Brit. Columbia until 1890 when it was eollectod at Sproat 

 on the Columbia Eiver by J'rof. Macoun. 



Claytonia cordifolia, Wat. 



Found by Prof. Macoun at an attitude of 5000 ft. on the 

 mountains near "Warm Springs, Kootanie Lake, B. C. 

 New to Canada. 



Elatine Americana, Arn. 



In his catalogue of Canadian Plants Prof. Macoun gives 

 but one station for this species- -Long Lake in Assinaboia. 

 Dui'ing the past four years it has been found in widly 

 separated localities so that we may now safely say that 

 though of local occuri-ence it ranges in Canada from the 

 Atlantic to the Pacific. New stations for this species are 

 Tadousac Lake, Que. {Geo. G. Kennedy.) Hull, Que., and 

 Alberni, Vancouver Island. {John Macoun.) Port Sandfield, 

 Muskoka, Ont. {Dr. and Mrs. Britton and Miss Timmerman.) 



Astragalus leucopsis, Torr. 



One clump of this plant was found by Prof. Macoun near 

 Nanaimo, Van. Island in 1893. The seed was doubtless 

 brought fi'om California in ballast. 



LUDWIGIA alternipolia, L. 



Collected by Mr. AlejJ. Wherry of Windsor, Ont. in 

 1893. Mr. When-y writes: — "It is found in low rich, 

 svvampy gi-ound generally meadows and pastures, about 

 2 miles west of Sandwich, Out. ; also within half mile of 

 Windsor, Ont. Quite common in these places but not met 

 with elsewhere by me." 



This species is credited to Canada in Torrey & Grray's 

 Floia and in Hooker's Flora but no localities are mentioned. 

 Both this and the next species are common in Michigan 

 and that they have been so recently found on the Canadian 

 side of the Detroit liiver in a i-egion that has been well 



