Two new species of genus \(\textit{Helicteres}\) (Helicteroideae, Malvaceae) from Vietnam

Two new species of genus Helicteres (Malvaceae, Helicteroideae), Taynguyenenis and dakmilensis from the Central Highlands Vietnam are described illustrated. H. taynguyenensis is morphologically similar to angustifolia widely distributed in mainland SE Asia China, Japan Australia, but differs latter by having shorter petioles, larger calyx petals, longer androgynophores. closely related poilanei endemic Vietnam, distinguished fewer secondary veins, persistent stipules bracts, fruits. The IUCN conservation status, vernacular name, illustrations, photographs, comparison with closest allies provided for each species.