Identification and Characterization of , , and Species Present in Floricultural Crops from Long Island, New York.

Several , , and species cause Pythium diseases in greenhouse floricultural crops, resulting in significant seasonal losses. Four hundred and eighteen , , and isolates from flowering crops, growing media, or bench and floor debris were collected from Long Island greenhouses or clinic samples between 2002 and 2013. Isolates were identified to species based on morphology and internal transcribed spacer barcoding.