FIG. 48. DISEASES OF LIMA BEAN. 



a. b. c. different stages of downy mildew on pods, d. tuft of conidiophores and 

 conidia of Phythophthora phaseoli, e. same as d. but greatly enlarged, /. g. conidia 

 germinating by means of a germ tube, h. i. j. k. germination of conidia by means of 

 zoospores, I. germinating zoospores (d. to /. after Thaxter), m. n. fertilization of the 

 oogonium by the antheridium, o. Phoma blight on foliage, p. Phoma blight on pods 

 (o. and p. after Halsted), r. mature oospores of P. phaseoli (a. to c., m. n. and r. 

 after Clinton). 



