48 ILLINOIS BIOLOGICAL MONOGRAPHS [516 



On Gesneria alhiflora (Dene.) 0. Ktz. 



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

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

 On Cestrum laurifolium I'Her. 



Maricao, Apr. 3, '13, 824. 

 On Cestrum macrophylluni 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, 

 7/x, in diameter. 



Capitate hyphopodia alternate or irregular, forming an acute angle 

 with the mycelium, not crowded, about 27/x apart, head cell ovate, 17 x 

 Ifx., apex obtuse, the basal cell short. Mueronate 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 250ju, long, dark, tip acute. 



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

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

 constricted, obtuse, short, thick, 30 x 17/x. 

 On JatropJia hernandifolia Vent. 



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

 near Utuado, July 8, '15, 7930. 



The most distinctive characters are the short, thick ascospores 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, l/x in 

 diameter, branches opposite, mostly at acute angles. 



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

 about 35)u, long, head cell obovoid, 10 x 7/t, the basal cell 3)U, long. Mu- 

 eronate hyphopodia not seen. Perithecial setae none. Mycelial setae 

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

 about 250 x Gfi, dark throughout. Tip simple, obtuse. 



Perithecia 170/*, slightly rough, Asci soon evanescent; ascospores 

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

 On Mayepea domingensis Krug and Urb. Fig. 46. 



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

 July 16, '15, 8703. 



