Additional Species. 
168 
ADDITIONAL SPECIES. 
NOT RECORDED IN THE PRELIMINARY LIST. 
ChYTRIDIACE^E. 
269. Synchytrium aureum, Schroeter. 
On Viola pubescens, Ait., and Geum album, Gmel. 
Berryville. Not scarce. 
270. Synchytrium pluriannulatum, (B. & C.) Farlow. 
On Sanicula Marylandica, L. Berryville and 
Racine. Not scarce. 
Peronosporace^e. 
271. Peronospora euphorbia, Fckl. 
On Euphorbia maadata, L. Madison. (Seymour.) 
272. Peronospora ficari^e, Tul. 
OnRanunculus fascicularis, Muhl. Madison. (Sey¬ 
mour. ) On Ranunculus recurvatus, Poir. Racine. 
Rare. 
273. Peronospora sordida, B. & Br. 
On Scrophidciria nodosa, L., var. Marylandica , 
Gray. Racine. Only observed in 1892 and in a 
single station, where it was rather abundant. 
Gymnoasci. 
274. Tapiirina deformans, (Berk.) Tul. 
On Prunus Virginiana, L. Genoa Junction. Col¬ 
lected but once. 
275. Tapiirina rhizophora, Johans. 
On fruit of Popidus tremuloides, Mx. Racine, 
abundant. 
