No. 104.] . 51 



Valsa rhoophila, C. & E. 

 Dead branches of poison sumach, Rhus venenata. Guilderland. 

 May. 



Valsa glandulosa, Cke. 

 Dead branches of Ailanthus glandulosiis. Cold Spring. June. 



Valsa cenisia, De Xot. 

 Dead branches of red cedar, Juniperus Virginiana. West Albany. 

 May. 



Rosellinia ambigua, Sacc. 

 Decorticated stems of red-berried elder, Samhucus pubens. Adi- 

 rondack mountains and Sandlake. June. 



The species belongs to the section Coniochfeta. The perithecia in 

 some of our specimens are so densely crowded that they form a con-, 

 tinuous black stratum. 



Rosellinia mastoidea, Sacc. 

 Fallen decorticated branches of willow, Salix jmrpurea. West Al- 

 bany. Apr. 



Hypoxylon semiimmersum, Nits. 

 Decaying wood. Adirondack mountains. June. 



Laestadia ^sculi, n. sp. 



Perithecia small, .007 in. broad, lenticular, covered by the epidermis, 

 erumpent, opening by a minute pore, black; asci subclavate; spores 

 crowded, subelliptical, colorless, .0003 to .0004 in. long, .0002 to .00025 

 in. broad. 



Fallen petioles of horse chestnut, ^sculus Hippocastamim. Albany. 

 May. Clinton. 



Sphaerella maculosa, Sacc. 



Fallen leaves of poplar, Populus tremuloides. Adirondack moun- 

 tains. June. 



This species resembles S. orhicularis, but the perithecia are smaller 

 and hypophyllous, and the spores are larger and distinctly colored. 



Sphaerella macularis, Auersto. 

 Fallen leaves of poplar. Adirondack mountains. June. 

 In this species the spots are small and angular, the perithecia are 

 amphigenous and the spores are smaller than in >S^. maculosa. 



Sphaerella Lycopodii, n. sp. 



Perithecia minute, .004 in. broad, blackish; asci oblong or subcylin- 

 drical, often sliirhtly narrowed toward the apex, .0013 to .0016 in. long, 

 .0004 broad; spores oblong, .00045 to .0005 in long, .00016 to .0003 

 broad. 



Scales of dead spikes of club moss, Lycopodiiim clavatam. Adiron- 

 dack mountains. June. 



This differs from S. lycopodina, in its place of growth and in its 

 smaller asci and spores. 



