370 QEOLOaiCAL SURVEY OF CANADA. 



that this (No. 21) is a form of P- lonchites, Tuckerman. The only 

 actual difference is the shining lower leaves, but this and its peculiar 

 yellow-brown colour may be produced by some local influence ? But 

 the stipules of your plant at once remove it from any form of P. lucens 

 (P. longif alius, Gaudickaudi, &c.) Is the difference enough to call it a 

 form ?" (Bennett, Letter, March 3rd, 1890.) 



(2431.) P. heterophyllus, Schreb.; Gray, Man. VI., 561. 



P. gramineus and var. heterophyllus, Macoun, Cat. IV., 84. 



Both Mr. Bennett and Mr. Morong combine these, and prefer 

 Schreber's name, as it is specific and well understood. 



(2439.) P. Zizii, Both, (not Mertens & Koch.) 



Mr. Bennett writes that Mertens & Koch published this as a vai-iety, 

 not as a species. Roth was the first to do this. It is not improbable 

 that it has a prior name: P. angustifolia, Presl. Bather common in 

 Griffin Lake, Gold Range, B.C. 1889. (Macoun.) 



Var. Methyensis, Bennett, MS. 



Methy Lake, near Metliy Portage, Lat. 51°, 1888. (J. M. Macoun.) 



(2441.) P. perfoliatus, Linn., var. Richardsonii, Bennett, MS. 



P. perfoliatus, Linn., var. lanceolatus. Bobbins; Macoun, Cat. IV., 85. 



" Dr. Bobbins published this name in Gray, Man., ed. V., 488 ; but it is 

 pre-occupied by Blytt in Norgos Flora, 1861, for a Norwegian var., 

 which is not the same as Bobbins' plant ! [Le Grand, a French author, 

 has since (188'7) published a var. lanceolatus, a French form of P. per- 

 foliatus.'\ I prefer the name var. Richardsonii for the American P. 

 lanceolatus, after Dr. Richardson, who seems to have been the first to 

 collect it. (Glasgow Herb.) British- American ' Franklin Expedition '." 

 (Bennett.) Methy Lake and River, Lat. 57°, 1888 ; Anstey's Creek, 

 Shuswap Lake, B.C. 1889. (J M. Macoun.) In a pond on the 

 Reservation at Kamloops, B.C. 1 889. (Macoun.) 



(2443.) P. Obtusifolius, Mertens & Koch ; Macoun, Cat. IV., 86. 

 Methy River, Lat. 57°, 1888. (J. M. Macoun.) 



