CATALOGUE OF PLANTS. 507 
Sub-Class 2.-ASCOMYCETES. 
COHORT I.—GYMNOASCEZ. 
EXOASCE. 
*TAPHRINA, Tul. 
T. Pruni, Fckl. 
On plums. 
T. deformans (Berk.), Tul. 
On peach leaves. 
T. purpurascens, Robinson. 
Leaves of Rhus copailina. 
T. Potentill~ (Farlow), Johanson. 
Leaves of Potentilla Canadensis. 
T. aurea (Pers.), Fr. 
Leaves of Populus tremuloides. 
T. corulescens (Mont. & Desm.), Tul. 
Leaves of Quercus coccinea and Q. alba. 
T. alnitorqua, Tul. 
On alder catkins, Morris: Parsippany—Trelease. 
COHORT II.—PYRENOMYCETES. 
PERISPORIACE. 
Series 1_ERYSIPHEZ. 
SPH AIROTHECA, Lev. 
S. Castagnei, Lev. 
On living leaves of Rosaceze, Composite, etc. 
S. Mors-uve (Schw.), B. & C. 
On gooseberry leaves. 
* Ascomyces in Preliminary Catalogue. 
