og Q NATURAL HISTORY BULLETIN. 



agree with Dr. Magnus, who said [Bot. Centr, 37:289) some 

 time ago regarding the specific matter in debate, that he held it 

 " incorrect to form such names as Puccinia -poculiformis (Jacq. ) 

 Wettst. for Puccinia graminis Pers." We prefer to yield to 

 what we consider an unpleasant necessity, and recognize a 

 condition which we believe not only more justly and accurately 

 represents the present state of our knowledge but tends to a 

 more secure and stable nomenclature. We feel as did Dr. 

 Wettstein, when he made the first change of this nature that 

 was made {Pilzflora der Steicrmarh, p. 18), one that now seems 

 likely to be followed in many instances, and especially for most 

 of the gramineous and cyperaceous species. He said (trans- 

 lated into English) : " Although it is hard to drop a name, 

 which has become so generally established as the name Puc- 

 cinia graminis. vet I feel compelled to do it. There is no doubt 

 that Jacquin described the sEcidium of this species in 17S6, 1. c, 

 as his cited illustration also affirms. The species-name " -pocu- 

 liforme" under which Jacquin described this sEcidium as a 

 Lycopcrdon. is consequently the oldest name, certainly older 

 than Persoon's, which he established in the year 1797, in the 

 Tent. Disfios. Meth. Fung:, p. 39." 



Other matters pertaining to the present paper, such as the 

 quotation of the original description of the species, the addi- 

 tion of an emended description when deemed advantageous, 

 the elevation of the number and position of the germ-pores of 

 the uredospores as valuable diagnostic characters, the rather 

 incomplete citation of exsiccati, etc., are probably sufficiently 

 self-explanatory to be passed over without comment. 



Numbers one to seventeen were described in a previous 

 article in this journal (3:44), and the present article includes 

 numbers eighteen to thirtv-four. 



18. Uromyces alopecuri Seym. (1889. Proc. Bost. Soc. 

 Nat. Hist. 24:186.) 



i8«. On Alopccurus geniculates fulvus (Sm.) Scrib. Vermilion Lake, 

 Minn., Holway. 



iS£. On Alopecurus geniculatus fulvus (Sm.) Scrib. Vermilion Lake, 

 Minn., Holway. 



