88 Wisconsin Academy of Sciences, Arts } and Letters. 
teleutospores on Car ex pubescens, Mulil. During 
the spring of 1903 Dr. Arthur produced a similar 
aecidium on Ribes gradle, Michx, using teleuto- 
spores from Car ex graciXlima, Schw., collected at 
Racine. I have not seen the pallid cluster cups 
in the field and suspect that their peculiar appear¬ 
ance is due to the conditions under which they grew 
and that the ordinary Aecdium grossulariae has 
its rust stage on Car ex. For the reason stated un¬ 
der ISTo. 242 I should prefer the name Puecinia 
caricis-grossulariae if that proves to be the case. 
233. Puccini a fraxinata (Lk.) Arth. 
(.Aecidium fraxini, Schw. Prelim. List; Puc- 
cinia periderm,iospora (Ell. & Tracy) Arthur.) 
Teleutospores on Spartina cynosuroides, Willd. 
Racine. I have collected this rust hut once. It 
is probably more abundant in the western part of 
the state where the Aecidium occurs on the ash. 
234. Aecidium ranunculaceaeum, DO. 
On Anemone nemorosa , L. Pelican Lake. Lo¬ 
cally abundant. 
242. Aecidium compositarum, Mart. 
On Bidens frondosa, L. Racine. On the coty¬ 
ledons and first leaves in early spring. 
Aecidia on Aster and Erigeron have been pro¬ 
duced by Dr. Arthur from teleutospores on Car ex 
foenea, Wild., and Carex festucacea, Wild., respec¬ 
tively, and the species designated as Puecinia 
caricis-asteris, Arthur, and P. caricis-erigeroniis, 
Arthur. Lie has also shown that aecidia on Solir 
dago are produced from teleutospores on Carex and 
given the name Puecinia caricis-solidaginis. As 
it is becoming evident that there are a num¬ 
ber of species of rusts on Carices this method 
of forming specific names from the generic names 
of both aecidial and rust hosts would, if carried out, 
be of much assistance in understanding them. This 
