438 PLANT DISEASES 



1 00-2 50 X S-6 fi; conidia solitary at the apex of the conidio- 

 phores, elliptical, ends broadly rounded, 3-septate at 

 maturity, slightly constricted at the septa, pale fuHginous, 

 28-30X11-12 jj.; epispore densely and very minutely 

 echinulate under a high power. 



Cercospora, Fresen. — Hyphae somewhat flaccid, simple 

 or slightly branched, fuscous ; often growing on living 

 leaves and forming pallid, dry spots ; conidia worm- 

 shaped, olive or subhyaline, multiseptate. 



Cercospora circumscissa, Sacc, Fung. Ven., ser. v. p. 

 189. — Forming spots on both sides of living leaves; spots 

 circular, pallid, dry, the dry portion at length falling out; 

 hyphae fasciculate, nodulose, brownish ; conidia acicular, 

 attenuated towards the apex, septate, tinged brown, 50 X 

 3 '5-4 /*• 



Cercospora apii, Fresen., Beitr., p. 91, pi. xi. figs. 46-54. 

 — Spots subcircular, on both surfaces, pale brown, 4-6 mm. 

 diam., with an irregularly narrow raised margin ; hyphae 

 generally hypophyllous, in minute, brown, gregarious tufts, 

 i-2-septate, subundulate, 40-60 X 4-5 /^ ; conidia slightly 

 obclavate, 3-10-septate, 50-80X4111, subhyaline. 



Cercospora violae, Sacc, Fung. Ven., ser. v. p. 187. — 

 Forming spots on both surfaces of the leaf; spots sub- 

 rotund, dry, pallid ; hyphae short, simple, 30-35 X 4 /*, 

 fuliginous; conidia very long, 150-200 X3"5 /*, rod-shaped, 

 suberect, multiarticulate, hyaline. 



Cercospora resedae, Fuckel. — Tufts gregarious, grey, 

 minute, appearing on dry spots on the leaf, 2-4 mm. diam. ; 

 hyphae closely crowded, quite simple, continuous or 



