274 The Philippine Journal of Science 



37. Cercospora. On Vigna sinensis Endl. a, group of conidiophores 



with immature conidia attached (x 350); b, conidia (x 350); 

 c, germinating conidia ( X 350) ; d, germinating conidiophores 

 (X 350). 



38. Erysiphaceae on Vigna catjang Walp. Mycelium and conidio- 



phores with chains of conidia ( X 325) . 



39. Sclerospora maydis (Rac.) Butl. a, conidiophore with conidia, 



N^rising from stomata of leaf (x 320); b, conidia (X 320); 

 c, germinating conidia (X 320). 



40. Helminth osporium inconspicuum C. et E. a, group of conidio- 



phores (X 320); b, conidium from tassel of corn (X 320); 

 c, conidia from leaf of corn (x 320). 



41. Helminth osporium inconspicuum C. et E. a, germinating conidio- 



phores (X 320); b, germinating conidia (x 320). 



42. Hebninthosporium inconspicuum C et E. Direct penetration of 



host tissue (x 325). 



43. Helminthosporium inconspicuum C. et E. Germinating spore 



( X 345 ) , germ tube about to enter stomata. 



