Samples were collected between August 2016 and May 2017 at Sangju-si, Gyeongsangbuk- do, Jeju-do, and Uljin-gun, Gangwon-do. As a result, one genus and six species were newly recorded in Korea. The unrecorded indigenous genus was Borzia, and the six species were Anagnostidinema acutissimum, Komvophoron bourrellyi, Hydrocoleum stankovicii, Borzia trilocularis, Phormidium tinctorium and Pseudanabaena lohchoides. Phormidium tinctorium and Pseudanabaena lohchoides had been reported to inhabit freshwater, but in this study, these were found in brackish water. It had also been reported that B. trilocularis trichomes are composed of up to 8 cells, but in this study, a maximum of 10 cells was observed.

• Byoung Cheol Yim(Department of Life Science, College of Natural Science, Kyonggi University)
• Mi Ae Song(Department of Life Science, College of Natural Science, Kyonggi University)
• Sung Do Bang(Department of Life Science, College of Natural Science, Kyonggi University)
• Sung Ro Yoon(Department of Life Science, College of Natural Science, Kyonggi University)
• Ok Min Lee(Department of Life Science, College of Natural Science, Kyonggi University) Corresponding author