254 Wisconsin Academy of Sciences, Arts, and Letters. 
In “Notes’’ V p. 694 reference was made to a small collection on 
Ambrosia trifida from Maiden Rock which was referred to Enty- 
loma polysporum (Pk.) Pari. This form with definite, orbicular, 
yellow, thickened, concavo-convex spots is however merely a late 
stage of E. compositarum Pari, although it differs strikingly in 
appearance from the earlier conidiophorous state. The spore walls 
do not become thick. Pield observation is said to indicate that 
Entyloma calendulae (Oud.) D By. as it occurs in Europe is com¬ 
posed of races adapted to various genera of Compositae and H. & P. 
Sydow have proposed eight binomials for the designation of these 
races {Ann. Mycol. 16:244). The same kind of evidence indicates 
that an equal number of races of Entyloma compositarum Pari, 
exist in Wisconsin but I see nothing to be gained by using bi¬ 
nomials for them as it would tend to obscure their very close kin¬ 
ship. It would require a large amount of experimentation to dem¬ 
onstrate that under no circumstances is there passage from one 
host genus to another. There seems to be a very close adaptation 
of parasite to host in the Ustilaginales in general and with that in 
mind the citation of the host gives the information in this case that 
would be conveyed by a binomial without obscuring the conception 
of phylogenetic unity. It seems quite possible that no violence 
would be done in considering E. calendulae (Oud.) D By. and E. 
compositarum Pari, as two geographical series of races of a single 
species. 
In Notes II p. 106 it was stated that Uromyces graminicola Burr, 
had been collected at Madison on the railroad right of way. It 
was not again observed until 1920 when it was found at Durand 
in the western part of the state. 
Por the rust on Koeleria cristata having its aecial stage on Liatris 
I am using the designation Puccinia koeleriae-liatridis instead of 
P. liatridis Bethel. P. koeleriae Arth. with aecia on Berberis is con¬ 
sidered to be distinct. 
Puccinia pustulata (Curt.) Arth. with aecia on Comandra is 
treated as a race of P. andropogonis Schw. in North American 
Flora. 
Puccinia simillima Arth. is united with P. magnusiana Koern. in 
North American Flora. 
In the provisional list Rubus idaeus aculeatissimus, B. occiden- 
talis and B. triflorus were given as hosts of Pucciniastrum arcticum 
