83 



[Gi/miiospoj-aiii/iniji ). as pointed out l».v ^las'iuis,* for they neither grow 

 upon the phun nor produce their spores in autumn. Further confirmation 

 of this is found in Koth's Flonr <lrnn(iiiic(r, the first volume of which was 

 issued the year following the appearance of Willdenow's work. In this 

 volume (p. 547; Piirciiiid si in pier is given, and credited to Willdenow, with 

 no reference to Micheli, Avhile a few pages farther on in the volume the 

 common cedar apple of Europe is listed as TrciiuJUt jiiuipcrUia. The two 

 were evidently considered 1)y the author to l>e distinct fungi. 



There seems to be no doiibt, that according to our present form of 

 procedure, we must consider that the genus Puccinln was established by 

 Willdenow in 1787, with the single species, /'. s'niiplcv. a species that does 

 not belong to the I'rrdined'. What fungus Willdenow had in hand, I am 

 not prepared to sa.v. The description fairly well applies to Connihirid 

 J'ersiar (Schw.) Sacc, but that is a North American fungus, common in 

 America but not yet reported from Europe. So far as our present pur- 

 pose is concerned, however, it is enough to know that the t.vpe of the 

 genus Piicciuid is not uredineous. Therefore, the largest and best known 

 genus of plant rusts, the one that includes the chief economic species, 

 drops entirely out of the extensive family of the I'rcdiiicd'. Probably 

 Doctor Kuntze is to be followed in placing under Dicivoma the species 

 that have heretofore been listed under ri/iciiiid. as 1 have already pointed 

 out in my preceding paper before the Academy. 



Whether this is the final word regarding the genus Pdcciiiid, and the 

 fungi which it has lieen used to cover, yet remains to be seen. It may 

 appear foolish to some to relegate to obscurity a well known and long 

 estal)lished name, upon what seem to be technical grounds. But the 

 loss of a familiar name should not stand in the way of the introduction 

 of definite rules which will lead to a reasonably permanent nomenclature. 

 What is most desired is that the period of trial and transition shall be as 

 short as possible, and to assist in Itringing this about the study of the 

 genus Puccinia is herewith presented. 



•■■ Bot. Centr., Vol. LXXVII, p. 5. 



