456 PROCEEDINGS OF THE ACADEMY OF [1893. 



Phyllosticta Iridis E. & M. 



On leaves of Iris versicolor, Green Cove Springs, Fla. April 12, 

 1884, (Dr. Martin), and Ann Arbor, Mich. July 12, 1892. 

 (Harriet L. Merrow). 



Perithecia amphigenous, minute, buried in the leaf, with only the 

 papilliform apex visible, 4-6 together on small (J-l mm.), dark 

 purple spots thickly scattered over the leaf which at length becomes 

 reddish-brown and dead at the apex and along the sides. Sporules 

 oblong-cylindrical, hyaline, nucleolate, 9—11 x 2%;/, abundant. The 

 spots soon become dirty white in the center. 



The Florida specc. lack the white center in the spots, and are not 

 as well developed as the Mich, specc. but are evidently the same. 

 Judging from the description and the spec, in F. Gall. 238, this is 

 very distinct from Asteroma tenerrvmum Grogn. 



Dothiorella Hippocastani E. & E., N.A. F. 2941, F. Colurnbiani 72. 



On dead limbs of jEseulus Hippoeastanum, Newfield, N. J. May 



1893. 



Stroma subcuticular, seated on the surfaceof the inner bark, ellip- 

 tical, grayish, about 2 mm. diam., often seriate- confluent, the apex 

 erumpent through the slightly raised, irregularly ruptured epider- 

 mis. Perithecia 8-12 in a stroma, ovate-globose, whitish inside, 

 100-150// diam., contracted above into short necks with their papil- 

 liform ostiola barely erumpent in the dark colored disk. Sporules 

 oblong-fusoid, hyaline, continuous, at first granular with several oil 

 globules, 20-25 x 5-6,", on pedicels shorter than the sporules. 



Dothiorella Mali E. & E. 



On dead apple tree limbs, Cuba, Ills. May 11, 1893. (Barthol- 

 omew No. 991). 



Stromata scattered, orbicular or elliptical, 1-2 mm. diam., at first 

 covered by the epidermis, finally erumpent and loosely embraced by 

 its ruptured margin. Perithecia globose, white inside, l—i mm. 

 diam. , buried in the substance of the soft, dark colored stroma, with 

 only their minute papilliform ostiola visible. Sporules oblong, hya- 

 line, granular, 18-20x4-5//, on stout basidia about as long as the 

 sporules. 

 Vermicularia petalicola E. & E. 



On decaying petals of Liriodendron Tulipifera, Wilmington, Del. 

 June, 1893. (A. Commons). 



