62 ILLINOIS BIOLOGICAL MONOGRAPHS [530 



Named in honor of A. Gaillard in recognition of his extensive studies 

 of the genus Meliola. 



93. Meliola dieffenbachl^ sp. nov. 



Colonies amphigenous with a tendency to be more numerous above 

 but larger below, 1-5 mm. in diam,, black, velvety. 



Mycelium branches usually opposite at uniform angles forming a 

 rather dense mat. Capitate hyphopodia alternate or opposite, oblong, 

 spherical or curved, basal cell 4/* long, head cell 10-14/Lt. Mucronate 

 hyphopodia few, alternate or opposite. Mycelial setae rigid, black, 

 straight, about 400/a long, short branched or merely toothed apex. Teeth 

 of varying number and size. Perithecial setae or appendages none. 

 Asei soon evanescent, 2-4-spored. Spores cylindrical, 40 x 14ju,, 4-septate, 

 ends obtuse, slightly constricted at the septa, end cells rather larger than 

 the others. 



Perithecia grouped in center of colony, numerous, 140-170/t in diam. 

 On Dieffenhachia sequine (Jacq.) Schott. Fig. 56. 



Las Marias, July 10, 15, 8148 (type), 8210. Maricao, Oct. 18, '13, 

 3889, July 19, '15, 8851. Catano, July 2, '15, 7707. Lajas, June 17, 

 '15, 7155. Monte de Oro, near Cayey, Dec. 3, '13, 5666, 5731. Dos 

 Bocas, below Utuado, July 8, '15, 8074, 8077. Mayaguez, June 24, '15, 

 7420. 



This differs strikingly from M. phUodendri in the branching of its 

 setae. It resembles M. fuscidula but differs from it in the character of 

 the setae. 



94. Meliola bidentata Cke. 



Grev. 11 : 37, 1882. . 

 On Tecoma pentaphylla (L.) Juss. 



Guanajibo, June 19, '15, 7202, 9002. Hormigueros, K. 7, June 23, 

 '15, 7347. 

 On Tdbebuia haemantha (B.) Gris. 



Monte Alegrillo, 4716. 

 On unknown dicot, St. Ana, July 1, '15, 7621, 7633. 



The above named specimens were compared with and agree with a 

 specimen obtained from the Kew Gardens. (Ravenel Fung. Amer. 

 Exs. — ^No. 330,) there labeled ''M. furcata, Lev." but also labeled in 

 Cooke's writing **not furcata Lev. but bidentata Cke. M.C.C." 



95. Meliola bicobnis Wint. 



Hedw. 26 : 99, 1886. 

 On Meihomia axillaris (Sw.) 0. Ktz. Fig. 57. 



