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Four new species of Camellia L. (Theaceae) are described from Vietnam: C. duyana Orel, Curry & Luu, C. ligustrina Orel, Curry & Luu, C. bugiamapensis Orel, Curry, Luu & Q. D. Nguyen, and C. capitata Orel, Curry & Luu. The new taxa were collected from the Da Lat Plateau and the Lang Biang Massif phytogeographic region in southern Vietnam. The new finds are morphologically dissimilar to known Camellia species, and for two species, the new sections Camellia sect. Capitatae Orel and Camellia sect. Pierrea Orel are established. These species are endemic to the montane temperate or to the lowland tropical rainforests of Vietnam.