Pythium Root Dysfunction of Creeping Bentgrass

Fig. 21. Oospore of P. aristosporum produced in grass-leaf blade cultures. Oospores are aplerotic and large, with diameters ranging from 24 to 44 µm in diameter. (Courtesy of Gloria Abad, USDA).



Image from Plant Health Progress article:
Pythium Root Dysfunction of Creeping Bentgrass