30 NEW YORK STATE MUSEUM 



6-8 X 5-6 IX or 5-6 fi in diameter. I have seen no description of the 

 European plant that gives the spore dimensions. 



Ophiotheca vermicularis (Schw.) Macbr. 

 Dead stems of herbs. Edwards. May. Determined by T. H. 

 Macbride. 



Peniophora tenuissima n. sp. 

 Widely effused, very thin, indeterminate, adnate, not at all 

 or but slightly rimose when dry, whitish, subpruinose; spores 

 ellipsoid, 8x4/*; cystidia subcylindric or elongated conic, obtuse, 



50-80 X 15-20 fl. 



Bark of yellow birch, Betula lutea Mx. North Elba. June. 



Periconia pycnospora Fres. _ 

 Dead stem of paeony, Paeonia officinalis L. 

 Menands. April. Rare. 



Peronospora trifoliorum DeBy. 



Living leaves of alfalfa, Medicago sativa L. Geneva, 

 Potsdam, Fayetteville, Canandaigua and Earlville. June. F. C. 

 Stewart. Oospores were found in October. 



Pestalozzia adusta E. & E. 

 Living leaves of wild black cherry, Prunus serotina 

 Ehrh. Orient Point. July. R. Latham. 



Pestalozzia funerea Desm. 

 Twigs of white cedar, Thuja occidentalis L. Orient 

 Point. May. R. Latham. 



Pestalozzia longiseta Speg. 

 Living leaves of cultivated raspberry. Orient Point. August. 

 R. Latham. 



Phacidium lignicola n. sp. 



Perithecia superficial or nearly so, about i mm broad, orbicular 

 or broadly ellipsoid, prominent, rugose, black, laciniately opening, 

 the margin with 3-5 triangular teeth ; hymenium blackish or green- 

 ish black; asci clavate, 60-80 x 12 /x broad in the widest part; spores 

 crowded or subdistichous, continuous, straight or slightly curved, 

 oblong or sometimes slightly narrowed toward one end, hyaline, 



12-15x3.5-4 fX. 



