REPORT OF THE STATE HOTANIST I916 27 



Cryptospora suffusa (Fr.) Tul. 

 On dead twigs of Alnus rugosa (DuRoi) Spreng., Albany. 

 H. D. House, January 30, 19 16. 



Cryptosporium robiniae Dearness & House, sp. nov. 

 Acenaili cortical, raising the epidermis into circular or elliptical 



uncolored pustules, gray in tangential sections, .2-1 mm showing 



when mature a central, circular, perforation in the epidermis. 

 Sporules hyaline, continuous, strongly falcate, 14-17 x 1-1.5 m- 

 On dead twigs of Robinia pseudo-acacia L. Hills 



southeast of Rensselaer. H. D. House, May 4, igi6. Type in the 



herbarium of the New York State Museum. 



Cylindrosporium iridis E. & H. 



On living leaves of Iris versicolor L., Orient, N. Y. Roy 

 Latham, October 15, 191 5. 



Dendrodochium acerinum Dearness & House, sp. nov. 



Sporodochia verruciform, sparsely scattered, brown when dry, 

 fiat, .5-. 7 mm in breadth, .2 mm in depth, apparently superficial on 

 the cuticle but really developing from the cortex. 



Conidia numerous, 4-5 x 1.5 /u, borne on curved, branching 

 sporophores, the stalk and branches of which are of various lengths 

 but usually totaling about 45 /x in length. The branches are 2 /x 

 thick. 



On dead twigs of Acer pseudoplatanus L. Menands, 

 Albany county. H. D. House, December 2, 1914. Type in the 

 herbarium of the New York State Museum. 



Diaporthe americana Speg. 



On dead twigs of Magnolia v i r g i n i a n a L. (M. 

 g 1 a u c a L.) Babylon, N. Y. H. D. House, April 21, 1916. 



First collected in this country by Professor Ellis in January 1889 

 on Magnolia g 1 a u c a and reported as D. americana 

 Speg. Ten years afterward he published a revisal stating that the 

 perithecia were too large for D. americana and proposed for 

 his collection the name of Diaporthe magnolia e. The 

 Babylon material shows marked variation, so much so, that Professor 

 Dearness is inclined to regard the description ofD. americana 

 as covering the Babylon collection as well as Professor Ellis's D. 

 m a g n o 1 i a e. 



