40 ILLINOIS BIOLOGICAL MONOGRAPHS [508 



The species was described from Brazilian specimens on Didymopa- 

 nax sps. My material does not agree exactly with the somewhat meagre 

 description, but does agree fully with a co-type specimen (Glazion, 

 Minas Geraes, Brazil 1893) kindly furnished by Dr. H. Sydow. No 

 perithecial setae are evident, though the mycelial setae are often clus- 

 tered around the base of the perithecium, which may account for this 

 character in the description. A striking character in my specimens is 

 the capitate hyphopodia, which are usually opposite, with a regular, oval 

 head cell. The chief distinction between -this species and M. araliae 

 seems to be in the length of the setae. It is possible that M. didymo- 

 panicis should be reported under that name. M. araliae was collected 

 in Porto Rico, by Ule, No. 242 in 1884 on "Aralia arborea". 



50. Meliola amomicola sp. nov. 



Colonies mostly hypophyllous, black, circular to irregular, diffuse, 

 5-15 mm. in diam. Mycelium rather closely woven, nearly straight, 

 black to pale straw color, branches mostly opposite, 6/x thick. 



Capitate hyphopodia mostly opposite, two per cell, cells about 24/x 

 long. Head cell cylindrical, straight or crooked, little or no thicker than 

 the stalk cell, stalk cell 2-4/u, long. Mucronate hyphopodia scattered, 

 bottle-shaped, 24 x 6/x. Perithecial setae none. Mycelial setae sparse, 

 scattered, long, 900-1000/u., lOytt thick at base, black throughout, acute. 



Perithecia scattered, 180/u, in diam. Spores 15 x 11 fi, strongly con- 

 stricted, obtuse. 

 On Amomis caryophyllata (Jacq.) Krug. and Urb. Fig. 37. 



Mayaguez Mesa, June 15, '15, 7054 (type). Mayaguez, June 25, 

 '15, 7483. 



51. Meliola myrsinacearum sp. nov. 



Colonies amphigenous, more abundant above, irregular, circular, 

 1-10 mm. in diam., confluent. Mycelium black, forming a close network, 

 10/x in diam., branches mostly opposite. 



Capitate hyphopodia alternate, unilateral or irregular, not crowded, 

 1 per cell, cells about 34/Lt long, head cell nearly cylindrical or slightly 

 pyriform, 20 x 14/i,, the basal cell 2-4yx long. Mucronate hyphopodia 

 few and scattered, alternate or opposite, bottle-shaped, 24 x lO/i. Peri- 

 thecial setae none. Mycelial setae few or absent in young colonies, abun- 

 dant in old colonies, straight or slightly curved, 625-}- x lO/i, dark 

 throughout, tip obtuse. 



Perithecia 200ju,, somewhat rough. Asci soon evanescent; ascospores 

 4-septate, brown, slightly constricted, obtuse, 51 x 17-20/x. 

 On Ardisia guadalupensis Due. 



Mayaguez Mesa, June 29, '15, 7576 (type), 7057. 



