136 METROPOLITAN PARK FLORA. 
ENDOCARPON, Hedw. 
E. hepaticum, Ach., var. complicatum, Scheer. 
On rock. M*. 
Division IV. FUNGI. 
(By A. B. Seymour and Flora W. Patterson.) 
USTILAGINE-=. 
Urocystis Hypoxis, Thaxter. 
Rare. S, on Hypowis erecta, L.; the finding of this species 
is of considerable interest as it has been reported but once 
before, when it was collected by Dr. Roland Thaxter in Con- 
necticut. 
PHYCOMYCETES. 
Synchytrium Myosotidis, var. Potentillez, Farl. 
Frequent. MM, on Potentilla Canadensis, L. 
Peronospora Corydalis, DBy. 
Probably frequent. B, on Corydalis glauca, Pursh., near 
Great Blue Hill. 
P. Ficariz, Tul. 
Common. BB, on Ranunculus bulbosus, L. 
P. Linariz, Fekl. 
Frequent, but obscure. S, on Linaria Canadensis, Spreng. 
PYRENOMYCETES. 
Plowrightia morbosa (Schw.), Sacc. 
Common. BB, on Prunus Virginiana, L. 
- Foner ImMpPEeRFECTI. 
Gleeosporium Canadense, Ell. & Ev. 
Common and very destructive. B and M, on Quercus 
alba, L. 

