22 ILLINOIS BIOLOGICAL MONOGRAPHS [490 



17a. Meliola compositabum Earle var. portoricensis var. nov. 



This form agrees with the type in peritheeial characters but its my- 

 celium is much more coarse, also its appendages are larger and more ir- 

 regular. 

 On Eupatorium portoricense Urb. Pig. 16. 



Vega Baja, Nov. 5, '13, 4301 (type). Dos Bocas, below Utuado, 

 Dec. 30, '13, 6861, 6034, 6031, 6866, 6830, 6557, Dec. 16, '13, 6003, 6032, 

 6031, July 8, '15, 7953, 8102. San Sebastian, Nov. 22, '13, 5192. Vega 

 Baja, July 2, '15, 7723. Arecibo-Lares Road, June 20, '15, 7320. 

 On Eupatorium dolicholepis Urb. 

 Rio Tanama, July 6, '15, 7893. 



On all hosts it is usually much overgrown with one or more para- 

 sites. 



18. Meliola tuberculata sp. nov. 



Colonies amphigenous, more common above, densely black, 1-3 

 mm. in diam., circular. Mycelium rather dense, quite crooked. 



Capitate hj-phopodia alternate, varying from simple and ovate to 

 irregularly lobed, usually 30/x or more apart. Mucronate hyphopo- 

 dia few, narrowly conic. Mycelial setae none. Peritheeial setae none. 

 Peritheeial appendages conic, 51 x 27/x, very numerous, nearly everj^ sur- 

 face cell of the perithecium being prolonged into an appendage. 



Perithecia 160/^1 in diam. Asci evanescent. Spores 4-septate, 38 x 

 14/i obtuse, slightly constricted. 



On unknown dicotyledonous plant, Vega Baja, July 2, '15, No. 

 7742, (tj-pe). 



This species is clearly distinct from all other Porto Rican species 

 studied, especially in the appendages to the perithecium, the crooked 

 mycelium, and the variable hyphopodia. 



19. Meliola calophyuli sp. nov. 



Colonies mainly epiphyllous, irregular, diffuse, 1-10 mm. in diam. 

 Mycelium forming a loose network of threads which branch irregularly, 

 7/Li in diameter. 



Capitate hyphopodia alternate or irregular, not crowded, about 35/* 

 apart, head cell ovoid or pyriform, often very angular and irregular, 

 24 xl7/Li, the basal cell 14/i long or less. Mucronate hyphopodia very ir- 

 regular in arrangement, bottle-shaped, narrow, about 20/i long. Myce- 

 lial setae none. Peritheeial setae very numerous, larvaeform, curved. 

 Tip obtuse, 51 x 17/4, translucent. 



Perithecia 220/i, ostiolar region thin. Asci soon evanescent; as- 

 cospores 4-septate, brown, very strongly constricted, obtuse, 44-47 x 17/i. 



