Taxonomic studies on the genus Pythium from Yunnan Province of China.
Of the 19 P. spp. collected in this province, Pythium hypoandrum is described as new and 5 (P. helicoides, P. nagaii, P. periilum, P. rostratum and P. vexans) are new records for Yunnan, while the 1st 3 of these are also new to China. Descriptions and illustrations are given for 12 of the spp. and a key to accepted spp. is provided.