A new genus of Zingiberaceae from Vietnam, Newmania N.S. Lý & Škorničk., with two species Newmania serpens N.S. Lý & Škorničk. and N. orthostachys N.S. Lý & Škorničk., is described and illustrated. Its relationship with Haniffia Holttum and phylogenetic position in the tribe Zingibereae is investigated using nrITS and trnK and matK plastid sequence data. The phylogenetic position of Kedhalia C.K. Lim, another recently described ginger genus from the same tribe, is also discussed briefly.
Two new Curcuma species are described and illustrated from Vietnam. They are compared to their closest allies from subgenus Ecomata. Curcuma arida from Núi Chúa National Park, Ninh Thuận Province, is compared to Curcuma pambrosima and C. vitellina, while Curcuma sahuynhensis from Quảng Ngãi Province is compared to Curcuma xanthella.
Camellia ngheanensis, a new species of Theaceae, is described and illustrated from Nghe An Province, Central Vietnam. It is most similar to C. ninhii in pubescent hairs on twigs and abaxial leaf blades, colour of flowers, pubescent ovary, glabrous filament, free styles from the base but differing by the glabrous petioles, pubescent bracteoles, 5-pubesncent sepals, 12 or 13 pubescent petals, and pubescent styles. The comparison between the new species and C. euphlebia, C. petelotii, and C. velutina is presented. Data on ecology, phenology, vernacular name and uses, expected conservation status are given along with an illustration and a coloured plate.
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