Burmannia championii Thwaites (Burmanniaceae) is newly documented from Kagamiyama, Higashi-hiroshima City, Hiroshima Prefecture, south-west Japan in October 2020. The species was found growing on the dimly lit forest floor covered with wet humus. The vegetation of the habitat is Schizophragma hydrangioides stage 2 of Querco glaucae-Pinetum densiflorae evodiopanacetosum innovantis based on the vegetation map by Toyohara et al. (1996). This vegetation is a secondary forest type in Saijo Basin of Hiroshima Pref. As succession progresses, this area may continue to provide an environment suitable for B. championii population persistence.

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