370 oEOLOoicAr, survey op canada. 



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

 actual difterence 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. lonyifolius, GamUchaudi, &c.) Is the ditlerenee enough to call it a 

 form ?" {Bennett, Letter, March 3i'd, 1890.) 



(2437.) P. heterophyllus, Schreb.; Gray, Man. VI., 501. 



P. gramineiis and var. Iteterophyllus, Macoun, Cat IV., 84. 



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

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



(2439.) P. Zizii, Roth, (^nol Mertena & Koch.) 



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

 not ax a species. Ruth was the first to do this. It is not improbable 

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

 Griffin Lake, Gold Range, B.C. 1889. {Macom.) 



Var. Methyensis, Bennett, MS. 



Melhy Lake, nearMethy Portage, Lat. 57°, 1888. (.7. .)/. Macoiin.) 



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



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



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

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

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

 has since (1887) published a var. lanceolatus, a French form of P. per- 

 foliatus.^ I prefer the name var. Richardsonii for the American P. 

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

 collect it. {Glasyow Herb.) Bi-itish-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. 1889. {Macoun.) 



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

 Metby River, Lat. 57'', 1888. {J. M. Macoun.) 



