170 The Ottawa Naturalist. [December 



occurrence coincides exactly in every respect with mine, and 

 from the fact of finding it surrounded by quantities of A tortien- 

 tosa and A. uva-ursi, I was also lead to believe it might be a 

 hybrid." This note was written in 1897 ; in 1898 Mr. Anderson 

 collected and sent to the herbarium of the Geological Survey a 

 fine series of specimens, which clearly show that A. media is a 

 hybrid. 



ASCLEPIAS TUBEROSA, L. 



Tarr Island, River St. Lawrence and below Rockport, 

 Leeds Co., Ont. {Rev. C. J. Young.) Eastern limit in Canada. 



Gentiana frigida, Hsenke. 



Above the tree line, alt. 5,000 ft., Nishing River, Lat, 62°, 

 Yukon District. Aug. 22nd, 1898. (J. B. TyrreU.) Not before 

 recorded from Canada. This plant differs in several important 

 respects from Behring Sea specimens, agreeing more nearly with 

 specimens from Colorado. 



Phlox Richardsonii, Hook. 



Mountains by Selkirk Trail, west of A-.ishihik Lake, Yukon 

 District, Sept. 7th, 1898. (J, B. Tyrrell.) Only known before 

 from Arctic sea-coast. 



Phacelia Purshii, Buckley. 



Growing among clover at the Central Experimental Farm, 

 Ottawa, Ont. {Wm. T. Mucoun.) Introduced from the United 

 States. Not before recorded in Canada. 



Plagiobothrvs echinatus, Greene, Piitonia, vol. in, p. 262. 



Habit of P. tenellus and of the same size, rather morel 

 branching, the branches strict, densely spicate at summit ; the' 

 usual pubescence augmented by sparse spreading and rather 

 hispid hairs ; nutlets rather more than ^ line long, whitish, dis- 

 tinctly carinate on the back at least toward the apex, the tran- 

 sverse rugosities few, slender and indistinct,mcrcly indicating the] 

 lines of numerous well elevated and sharp murications, the] 

 whole back thus appearing somewhat regularly echinate. 



Cedar Hill, Vancouver Island, i6th May, 1887. {/o/in\ 

 Macoun.) 



