96 Wisconsin Academy of Sciences, Arts, and Letters. 
Pucciniastrum myrtilli (Schum.) Arth. Specimens bearing 
telia were collected at Athelstane. The teliospores were more 
abundant in the epidermal cells of the upper surface of the 
leaves. Fraser ( Mycologia 5:237, 6:27) finds that the aecia are 
borne on the leaves of Tsuga canandensis. The Peridermium 
peckii of the provisional list probably belongs to this species. 
The Aecidium sp. indet. on Ampliicarpa monoica of the pro¬ 
visional list is Aecidium falcatae Arth. 
Senecio aureus was unintentionally omitted from the enumera¬ 
tion of hosts of “Aecidium compositarum” in the provisional 
list. Collections of aecia on this host have been made at Racine, 
Radisson and Merrimack. 
According to the inoculation experiments of Fraser ( Mycol¬ 
ogia 4 :236, 6 :25) the Peridermium balsameum Pk. of the provi¬ 
sional list is probably the aeeial stage of Uredinopsis. There 
seems to be no way at present of determining with which of the 
five described species of TJredinopsis that occur in Wisconsin any 
particular specimen of the Peridermium is connected. Fraser 
has found that Calyptospora goeppertiana Kuehn also produces 
a Peridermium on Abies balsamea. This rust probably occurs 
also in Wisconsin but has not yet been collected. 
Caeoma abietis-canadensis Farl. has been shown by Fraser 
.(Mycologia 5:188, 5:238, 5:27) to be the aeeial form of a 
Melampsora on Populus grandidentata which does not produce 
aecia on Larix. Probably some, if not all, of the uredinia and 
telia collected in Wisconsin on this host are of this race. 
Entyloma lineatum (Cke.) Davis. Material that had been win¬ 
tered out of doors was brought to germination in tap water slide 
cultures early in May. The normal germination appears to be in 
the sorus, isolated spores seldom germinating. The promycelium 
is consequently long (usually 35-50/x) and is flexuose and irreg¬ 
ularly nodulose, reminding one of the conidiophores of Rami - 
laria. The sporidia are borne in apical whorls of 2 to 4, are 
fusoid—cylindrical, 7-14x2 y. The whorl of sporidia is detached 
intact together with about an equal length of the distal portion 
of the promycelium and then rises to the surface of the water in 
the currents of which it revolves and moves in a very irregular 
manner. This is the same method of detachment that takes place 
