34 NEW YORK STATE MUSEUM 



Diaporthe aceris Fckl. 

 On fallen trunk of red maple, Acer r u b r u m L., Sylvan 

 Beach, Oneida county, May i6, 1918. H. D. House. 



Diaporthe celastrina Ell. & Barth. 



On dead stems of Celastrus scandens L., Oneida, Madi- 

 son county. May 15. 1918. H. D. House. 



Diaporthe menispermi Dearness & House, sp. nov. 

 Stromata scattered on the dead stems, two or three perithecia in 

 a stroma, sunk in the wood and raising the epidermis into minute 

 ptistules, 300 to 350 micr. in diameter, contents gray : ostiola cyHndri- 

 cal, crateriform, 60-70 fj. across, emerging through a black disk very 

 slightly above the uncolored epidermis. Asci paraphysate, fusoid. 

 mostly about 45 x 7 /m. Sporidia hyaline, i -septate, subbiseriate, 

 sometimes 2-nucleate. oblong-elliptic, obtuse at the ends, lo-ii x 



On dead stems of M e n i s p e r m u m c a n a d e n s e L., Albany, 

 N. Y., May 18, 1917. H. D. House. Type in the New York State 

 Museum herbarium. The same collection contains some material 

 of S p h a e r o p s i s menispermi Peck. 



Diaporthe triostei Dearness & House, sp. nov. 



Perithecia single or mostly in small groups of two to nine; 130 to 

 225 micr. in diameter, chiefly about 180 micr. developed immediately 

 under the cuticle, staining the surface of the xylem but not penetrat- 

 ing it or marking it in any way. Ostiola black, shining, sharply 

 conical, minute piercing the cuticle so briefly as to be hardly per- 

 ceptible to the touch. Asci ispindleform, acute at both ends, 30-35 x 

 7-8 fi, rather scantily paraphysate. Sporidia hyaline, straight or 

 nearly so, gradually acute at both ends, i -septate, not constricted. 

 4-nucleate, 12-15 X 2^/2 /J- 



On dead stems of T r i o s t e u m a u r a n t i a c u m Bicknell. 

 Glenmont, Albany county, May 15, 1919. H. D. House. Type in 

 the New York State ^iluseum herbarium. 



Didymella agrostidis Dearness & House, sp. nov. 

 Perithecia scattered, immersed with only the firm ostiola erumpent, 

 consisting of comparatively large brown cells ; depressed hemisphaeric 



