110 



Mycologia 



On living leaves of Ficus carica L., Rockdale, Texas, Oct. 31, 



1914, B. C. Tharp. 



Cercospora helenii sp. nov. 



Spots white, circular or irregular, grayish-brown border, 1-2 

 mm. in diameter ; hyphae amphigenous, brown, fasciculate, straight 

 or subgeniculate, continuous or sparsely septate, 35-60 X 3-4 p ; 

 conidia hyaline, granular-guttulate, cylindrical, 3-5-septate, 35- 

 50 X 3 /*• 



On living leaves of Helenium micro cephalum DC, Austin, 

 Texas, /. M. Lewis & B. C. Tharp. 



Cercospora hydrangeana sp. nov. 



Spots amphigenous, suborbicular, zonate, light-brown with 

 small, white centers, 5-10 mm. in diameter, or by confluence 

 covering large areas ; conidiophores amphigenous, scattered over 

 entire spots, but more abundant below, tufted, faintly septate, 

 straight or rarely subdenticulate, brown at base, becoming lighter 

 in color toward apex, 100-180 X 4.5—5 /*; conidia hyaline, straight 

 to slightly curved, truncate at base, upward attenuate, continuous 

 or faintly septate, 70-165 X 3~3- 5 



On living leaves of cultivated Hydrangea, Houston, Texas, 

 June 24, 1915, B. C. Tharp. 



Cercospora ilicis Maublanc 



Spots amphigenous, marginal or central, sometimes confluent, 

 circular to subcircular, white, surrounded by a zone of black 

 shading through yellowish-brown to green, or sometimes without 

 yellowish-brown zone, white center 1-3 or 4 mm. in diameter ; 

 conidiophores amphigenous, those above very short (20-40 X 41*), 

 continuous, yellowish-brown, subdenticulate, surmounting a par- 

 enchymatous and more or less cylindric brown base 20-40 p high 

 by 50-55 /jl across, those below longer, 60-105X4/*, obscurely 

 few septate, flexuous, spreading, denticulate, surmounting a very 

 slightly tubercular base ; conidia fili-spindleform, or upward at- 

 tenuate with a truncate base, at maturity multiseptate, 75- 

 130 X 3 (Described by Maublanc and Rangel in a bulletin of 

 the state of Sao Paulo, Brazil ; title Algunos fungos do Brazil, 

 novos ou mat conhecidos (1) ; date not given.) 



On living leaves of Ilex opaca L., Texarkana, Texas, Oct. 16, 



191 5, /. M. Lewis & B. C. Tharp. 



