676 Wisconsin Academy of Sciences, Arts, and Letters. 
A. A. Potter reports that the smut given in the provisional 
list as Sphacelotheca sorgini (Lk.) Clinton is S. cruenta (Kuehn) 
Potter. (Phytopathology 5:152-3.) 
Puccinia caricis-solidaginis Arth., P. caricis-asteris Arth., P. 
caricis-erigerontis, Arth., and P. dulichii Syd. are now included 
in P. extensicola Plowr. by Arthur ( Mycologia 7:70 and 80-81.) 
I am informed by Dr. Arthur that the rust on Melica striata 
that was recorded in “Notes’’ II under the name Puccinia 
melicae (Erikss.) Syd. is P. erikssonii Bubak. It has since 
been collected at Solon Springs on the same host. 
The rust on Agropyron repens given in the provisional list 
under Puccinia rubigo-vera (DC.) Wint. is now believed to be 
P. agropyri Ell. & Evht. developing its aecia on Eanunculaceous 
hosts. P. tomipara Trel. probably belongs here also. ( My¬ 
cologia 7:73-5.) It has been collected on Agropyron tenerum 
also at Solon Springs where (( Aecidium ranunculacearum” 
occurred on Anemone quinquefolia. 
Cultures made by Dr. Arthur have shown that Aecidium 
nesaeae Ger. is the aecial stage of Puccinia minutissima Arth. 
(Mycologia 7:86). 
For the rust of which Caeoma abietis-canadensis Farl. is the 
aecial form Ludwig makes the new combination Melampsora 
abietis-canadensis (Phytopath. 5:279). There is objection by 
some mycologists to the extension of aecial specific names to 
apply to telial states and the objection is especially cogent when 
the name is derived from that of the aecial host of a heteroecious 
species. Many rust names are derived from that of the telial 
host and it is confusing to have introduced among them an oc¬ 
casional one taken from that of the aecial host. In the present 
case, as in others, the aecial host bears also telia referred to 
another species and that is the one that the name would sug¬ 
gest. To the present day uredinologist this is a matter of 
little importance but when one considers the generations of 
botanists to come it seems well worth while to remove these ob¬ 
stacles from a path that is none too smooth. I am using in the 
herbarium Melampsora populi-tsugae nom. nov. referring to 
it specimens on Populus grandidentata from Gaslyn (II) and 
Kacine (II, III), and on Populus tremuloides from Wausaukee, 
