■Type B. Pythium debaryanum, oospores in various stages of fertilization and maturation. X 750 
■P. debaryanum, conidia. X750 
P. debaryanum var. Pelargonii, oospores. X750. Fertilization and maturation. Successive 
stages in fertilization of a single oogone in e-f-g. Note intercalary oogonia, plurality of 
antheridia, and broad apex of antheridia; also the thin wall of the oospore 
Ppi 
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