1992 年 7 巻 p. 45-71
Yungchun Dam Reservoir is located in the east about 80 km away to Taegu City in Korea. Collections for diatom analyses were made, at eight different stations including tributaries on July 31in 1990. A total of 125 taxa, distributed among 30 genera, were found. These taxa are described together with the distribution in the area studied. Hannaea arcus (Ehr. ) Patr. var. subarcus (Iwah. ) Lee is described as a new combination. In 11 plates, all taxa are depicted by microphotographs. In two additional plates, the morphological details of some taxa are shown by SEM photographs.