CERCOSPOEA. 415 



CERCOSPORA. Fres. (fig. 24, p. 397.) 



Hypbae not rigid, simple or branched, brown, often 

 parasitic and forming spots on leaves ; conidia elongated and 

 slender, brown or olive, rarely subhyaline, septate. 



Cercos^ora, Fres., Beitr., p. 90 ; Sacc, SylL, iv. p. 431. 



Yirgasporiiim, Cke. 



Cladosporium and Helmintliosporium of various authors (in 

 part). 



Distinguished by the vermiform septate spores. 



* On herbaceous Dicotyledons. 



Cercospora Bloxami. B. & Br. 



Forming pale orbicular spots, conidia elongato-fusiform, 

 acute at both ends, multiseptate. 



Cercospora Bloxami, B. & Br., Ann. Xat. Hist., n. 1979 ; 

 Sacc, SylL, iv. n. 2082. 



On fading leaves of Brassica najms and B. sinapis. 



Cercospora resedae. Fckl. (fig. 24, p. 397.) 



Formiog minute grey, gregarious tufts on dry spots of 

 the leaf, 2-4. mm. diameter; liyphae densely crowded, un- 

 branched, continuous or sparingly septate, straight below, 

 subtcrtuous above, 50-70 x 4—5 />t, brown ; conidia borne at 

 the tips of the hyphae, obclavate-linear, 4—5 septate, hyaline, 

 100-140 X 2-5-3/x. 



Cercospora resedae, Fuckel, Symb. Myc, 2^- 3^3 ; Sacc, 

 Syll., iv. n. 2092. 



Vircjasporium macidatum, Cke., Grev., iii. p. 182, t. xlviii. 

 f. 4. 



On living leaves of Beseda odorata. 



Cercospora calthae. Cke. 



Spots orbicular, epiphyllous, brown ; hyphae short, hyaline ; 

 conidia cylindrical, somewhat attenuated, septa scarcely 

 distinct, 30-35 X 2 /a. 



Cercospora calthae, Cke., Grev., xvii. p. Qb ; Sacc, SylL, 

 vol. iv. n. 7571. 



On fading leaves of Caltlia, 



