• 68 [Assembly, 



VALSELLA ADHERENS, Fckl. 



Corticated trunk and branches of white birch, Betula populifolia. 

 Sandlake. September. 



In our plant the disk is often whitish or grayish from the adhering 

 remains of the epidermis ; the perithecia are five to twelve in a 

 pustule and the spores are colored in the mass. It is apparently a 

 variety of the species and may be called var. Americana. 



VALSELLA LASCHII, Sacc. 



Dead whitened twigs of Acer spicatum. Port Henry. June. 



In our specimens the black stroma is apparent through the 

 translucid epidermis, and the white disk, though small, is plainly 

 seen by contrast. The asci are very broad, .0016 to .002 inch long, 

 .0005 to .0006 broad. This form may be designated var. acerina. 



DIATRYPELLA aUERCINA, Nits. 



Dead branches of thorn, Cratoegus tomentosa. Elizabethtown. 

 September. 



Although occurring on thorn branches, there does not appear to 

 be any good characters for separating this fungus from the species 

 to which I have referred it. 



SPH-ffiRELLA MINTJTISSIMA, N. sp. 



Perithecia very numerous, occupying the whole lower surface of 

 the leaf, very minute, .002 to .0025 inch broad, veiled by the epider- 

 mis, black ; asci oblong or slightly narrowed toward the apex, 

 .0016 to .002 inch long, .0003 to .0004 broad ; spores crowded, 

 oblong, straight, obscurely septate in the middle, .0006 to .0007 

 inch long, .00016 broad. 



Dead leaves of alder, Alnus incana. Adirondack mountains. 

 June. 



The perithecia are scarcely visible to the naked eye. The 

 affected leaves remain on the branches through the winter. They 

 had not yet fallen in June. 



SPH-ffiRELLA ANLICOLA, N. sp. 

 Perithecia small, .0035 to .0045 inch broad, hypophyllous, clus- 

 tered or scattered, naked, black ; asci oblong or subclavate, .002 to 

 .0025 inch long, .0005 to .0006 broad; spores crowded, lanceolate, 



