i6 



irregularly constricted and with adjacent cells of unequal diam- 

 eter, conidial scars not evident, about 30-60x3-6/^: conidia sub- 

 cylindric or somewhat clavate, light olivaceous, mostly straight, 

 at first continuous, finally several septate, about 60-80x4/^. 



This differs from the deecription of Cercospora Piperis Pat, 

 Bull. Soc. Myc. 11: 233, in the absence of definite spots, in the 

 septate and irregularly inflated sporophores, and in the more 

 evidently septate conidia. 



On living leaves of Piper aduncum^ near Mayaguez, altitude 

 400 feet. January. No. 4359 (with Meliola glabra on the 

 upper surface of some of the leaves). 



CERCOSPORIDIUM gen. nov. (Dematiaceae.) 

 Biophilus: sporophores elongate, soft, pannose, fasciculate: 

 conidia acrogenous and pleurogenous, oblong, oval or ovate, 

 once or several septate. 



This is related to Cercospora^ but differs in the long thread 

 like sporophores and in the broader and shorter conidia. As the 

 type of this genus I take the species published as Scolecotrichum 

 (?) Euphorbiae Tracy & Earle, Bull. Torr. Bot. Club, 33: 209, 

 also as Piricularia Euphorbiae (T. & E.) Atkinson, Bull. Cor- 

 nell univ. 3; 40. 



Cercosporiclimn Helleri sp. nov. 



Hypophyllous, effused, forming a black velvety coating 

 over considerable areas, at length discoloring the leaves, but 

 without definite spots: sporophores greatly elongated, forming a 

 tangled felted coating, dark olivaceous, occasionally septate, the 

 free distal ends frequently twisted and flexed, scarred by the 

 fallen conidia, 200-400 or more by 4-5/": conidia obovate, obtuse, 

 usually at length 3 septate, granular, 20-30x8-10". 



On living leaves of Sphe7ioclea Zeylanica in moist ground 

 near Anasco, altitude 25 feet. February. No. 4537. 



UREDINALES. 



Aecidium Wedeliae sp. nov. 



Hypophyllous on yellow spots 2-5mm. in diameter: pseudo- 



