Phonepaseuth, Phongphayboun, Keooudone Souvannakhoummane, Shuichiro Tagane, Phetlasy Souladeth, and Tetsukazu Yahara. 2021. “A new species of Paraboea and a new species record of Middletonia (Gesneriaceae) from a limestone karst of Central Laos”. Thai Forest Bulletin (Botany) 49 (1):135-41. https://doi.org/10.20531/tfb.2021.49.1.17.