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YANO Okihito, OHNISHI Wataru, KATSUYAMA Teruo, HOSHINO Takuji. Two New Species of Carex (Cyperaceae), C. satsumasendaica and C. shimizui, from Kagoshima Prefecture, Japan. The Journal of Japanese Botany. 2024. 99. 1. 16-24
Hiroyuki Koga, Yuki Doll, Wataru Ohnishi, Hirokazu Tsukaya. First records of non-native species Callitriche deflexa (Plantaginaceae), which was previously misidentified as C.terrestris in Japan. Biodiversity data journal. 2024. 12. e115142
TANAKA Norihisa, GRABOVSKAYA-BORODINA Alisa, KATSUYAMA Teruo, FUKUDA Tomoko, OHNISHI Wataru, SHIMIZU Akiko, IKEDA Hiroshi. Lectotypification of Calamagrostis yatabei (Poaceae). The Journal of Japanese Botany. 2023. 98. 2. 110-113