1919] TEHON— PORTO RICAN FUNGI 507 



Perithecia scattered, small, 65-75 M in diameter. Asci soon 

 evanescent, ascospores 4-septate, light brown, cylindrical, slightly 

 constricted, 40X15 /x. 



On leaves of Marcgravia rectiflora Tr. and Planch., Porto Rico, July 16, 

 1915, no. 8722 (type). 



The colonies formed by this Meliola are so inconspicuous as to pass entirely 

 ■ unnoticed. It is only when the leaf is placed under a lens that the colony is 

 to be seen. 



Phyllachora Nits. 



Phyllachora quadraspora, sp. nov. — Stroma variously shaped, 

 mostly oval to linear, 0.5-1X0.5 mm., with epidermal clypeus on 

 either side of the leaf usually bilocular. Locules sub-spherical, 

 115-125/1 in diameter. Asci cylindrical, short-stipitate, loo-iio 

 X10-12 )U,4-spored; spores hyaline, granular, i-guttulate, elliptical, 

 20-22 X 8 )U- Paraphyses present. 



On leaves of Paspalum glabriim Poir, Maricao, no. 8803 (type); P. con- 

 jugatum Bergius, Tanama River, no. 7856 (fig. 4). 



In naming this species the author has endeavored to follow the monograph 

 of the genus by Theissen and Sydow.^ The fact that the stroma is laid down 

 in the mesophyll of the leaf brings the fungus into the genus Phyllachora; but 

 the occurrence of only 4 spores in the ascus would seem, on the other hand, to 

 exclude it. This, however, need not be true, since Theissen, in characterizing 

 Ph. graniinis as having spores up to 8 ("zu acht") leaves the implication that 

 the spore number may be fewer than 8. 



Phyllachora graminis (Pers.) Fcl. Symb. Myc. 218. 1869. 



This species has previously been reported by Carman on an undetermined 

 species of Paspalum from Sabana Grande in 191 5. It is also to be noted on 

 Paspalum glabrum Poir., at Rosario, no. 9495a. 



Phyllachora ischmaemi, sp. nov. — Stromata appearing on the 

 upper side of the leaf, circular, crowded, and often confluent, laid 

 down in the mesophyll, 0.75-1.25 mm. in diameter. Clypeus 

 24-26 ju thick. Locules 2-several in a stroma, spherical to flask- 

 shaped, 125-145 jj. in diameter. Asci cylindric to clavate, 105- 

 150X10-12 M, 8-spored. Spores hyaline, spherical, uniseriate, 8 ju 

 in diameter, with a single guttula. Paraphyses present, filiform. 



On leaves of Ischmaemum latifolium, St. Pierre, Martinique Island, no. 

 2972 (type) (figs. 2, 3). 



3 Theissen, F., and Sydow, H., Die Dothidiales. Ann. Mycologici 13 1437. 1915. 



