A new species of Camellia L. (Theaceae) endemic to the Da Lat Plateau in southern Vietnam is described and illustrated: Camellia hongiaoensis Orel & Curry. The newly described species possesses mostly solitary, axillary or terminal flowers; bracts 5; sepals 3-5, transitional to petals (petaloids); petals 7-10; the outer whorl consisting either of sepals or petaloids is distinct, a random arrangement of petals in a tight and uneven spiral, numerous proximally fused stamens and gynoecium 4-or 5-carpellate.

A new species of Camellia L. (Theaceae) from Vietnam, C. inusitata Orel, Curry & Luu, is described, illustrated and compared with six Camellia species from sections Thea (L.) Dyer, Corallina Sealy and Paracamellia Sealy. Reproductive morphology and molecular evidence supports taxonomic placement in the genus Camellia but the vegetative morphology is so distinct that a new section, Camellia sect. Bidoupia Orel, Curry & Luu, is established.

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The new species Camellia oconoriana Orel, Curry & Luu (Theaceae), endemic to Lam Dong Province, Vietnam, is described and illustrated. It is compared to Camellia species in sections Archaecamellia, Stereocarpus, Piquetia and Chrysantha. Morphological evidence supports a transitional placement in Camellia sect. Chrysantha ser. Chrysanthae.