REPORT OF THE STATE BOTANIST FOR 1 92 1 79 



. Sphaeropsis betulae Cooke, var. lutea Dearness & House 



The variety here considered occurs upon Betula lutea. The 

 pycnidia are gregarious and distinctly though minutely stromate; 

 conidia nucleate, 18-22 x yy^-^/i i*. None of the conidia measured 

 was found to exceed 24 p in length. 



On dead branches of Betula lutea Michx. Sandlake, 

 Rensselaer county, Dr C. H. Peck, June (year of collection not 

 indicated). 



The varietal distinction of the above is indicated by compari- 

 son with the description of Sphaeropsis betulae 

 Cooke taken from Saccardo : " subgregaria, interdum sparsa, 

 cuticula elevata tecta; peritheciis depresse globosis, vix pepil- 

 latis ; sporulis ellipticis, intrigue rotundatis, continuis, luteolis, 

 30-32 x 9 n" On. Betula alba. 



Sphaeropsis gleditschiaecolae Cooke 

 On dead twigs of Gleditsia triacanthos L. Albany, 

 H. D. House, February 20, 1918. 



Sphaeropsis linearis Peck 

 On dead twigs of Quercus ilicifolia Wang. Albany, 

 H. D. House, June 7. 



Sphaeropsis populi Ellis & Everhart 

 On dead twigs of Populus nigra var. i t a.li c a Du- 

 Roi. Albany, H. D. House, May 13, 1917. 



Sphaeropsis physocarpi Ellis & Everhart 

 On dead stems of Spiraea latifolia Borkh. Albany, 

 H. D. House, December 21, 1919 and May 13, 1921. Previously 

 collected within a few yards of the same spot on Opulaster 

 o p u 1 i f o 1 i u s (February 28, 1915). 



Sphaerulina acori Dearness & House, sp. nov. 



Perithecia numerous, innate, in the upper side of the discolored 

 leaves, containing each 12 to 20 asci; walls very weak, asci apara- 

 physate, 30-50 x 15-20 fi; sporidia hyaline, three to five-septate, 

 nucleate, 26-30 x 4-5 /x. 



On languishing leaves of Acorus Calamus L. Glen- 

 mont, Albany county, H. D. House, August 25, 1919. 



Externally this does not appear distinguishable from Lep- 

 tosphaeria microscopica var. calami Karst. 



