-48 ILLINOIS BIOLOGICAL MONOGRAPHS [516 



On Gesneria alhiflora (Dene.) O. Ktz. 



Mayaguez Mesa, June 25, '15, 7431 (type), 7465. Dos Bocas, below 

 Utuado, July 8, 15, 8018, Dee. 30, '13, 6590. 

 On Cestrum laurifolium I'Her. 



Maricao, Apr. 3, '13, 824. 

 On Cestrum macrophyllum Vent. 



El Alto de la Bandera, July 14, '15, 8301. 



El Gigante, July 16, '15, 8561. 



65. Meliola jatrophae sp. nov. 



Colonies epiphyllous, circular to irregular, 1-4 mm. in diam. My- 

 celium forming a loose network of threads; branches mostly opposite, 

 7fi in diameter. 



Capitate hyphopodia alternate or irregular, forming an acute angle 

 with the mycelium, not crowded, about 21 fi apart, head cell ovate, 17 x 

 Ifi, apex obtuse, the basal cell short. Mucronate hyphopodia abundant 

 and crowded on certain threads, opposite, bottle-shaped. Perithecial setae 

 none. Mycelial setae few, except around the base of the perithecia 

 where they are numerous, curved, about 250/x long, dark, tip acute. 



Perithecia 130-150/x, slightly rough, with rounded protuberances, 

 Asci soon evanescent; aseospores cylindrical, 4-septate, brown, slightly 

 constricted, obtifse, short, thick, 30 x IT/x. 

 On Jatropha hernandifolia Vent. 



Rio Tanama, near Arecibo, July 6, '15, 7873 (type). Dos Bocas, 

 near Utuado, July 8, '15, 7930. 



The most distinctive characters are the short, thick aseospores and 

 the ovate, capitate hyphopodia, all directed forward at an acute angle. 



66. Meliola mayepeae sp. nov. 



Colonies amphigenous, more commonly epiphyllous, circular, 1-5 

 mm. in diam. Mycelium black, forming a rather close network, 7/* in 

 diameter, branches opposite, mostly at acute angles. 



Capitate hyphopodia small, alternate, not crowded, 1 per cell, cells 

 about 35/x long, head cell obovoid, 10 x 7/x, the basal cell Sfi long. Mu- 

 cronate hyphopodia not seen. Perithecial setae none. Mycelial setae 

 few to abundant, most plentiful around the perithecia, slightly curved, 

 about 250 x 6fx, dark throughout. Tip simple, obtuse. 



Perithecia 170/i,, slightly rough. Asci soon evanescent; aseospores 

 4-septate, brown, very slightly constricted, obtuse, 30-35 x 17/a. 

 On Mayepea domingensis Krug and Urb. Fig. 46. 



Mayaguez Mesa, June 25, '15, 7468 (type). El Alto de la Bandera, 

 July 16, '15, 8703. 



