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Four new species of Begonia (Begoniaceae) from Vietnam: B. abbreviata, B. calciphila, B. sphenantheroides and B. tamdaoensis

. Phytotaxa [Internet]. 2015 Aug. 14 [cited 2025 Dec. 6];222(2):83–99. Available from: https://phytotaxa.mapress.com/pt/article/view/phytotaxa.222.2.1