| Establishing species distributions is particularly challenging in large tropical genera of inconspicuous plants. One such genus is Oberonia (Orchidaceae) which we are currently revising for Thailand. When encountering material of a putatively new species, great care has been taken to make a wide geographic search for matching extra-Thai taxa. Against this background, we here record 12 species as new for Thailand: O. dissitiflora, O. evrardii, O. gracilis, O. insectifera, O. lotsyana, O. microphylla, O. orbicularis, O. semifimbriata, O. singalangensis, O. stenophylla, O. suborbicularis, O. wenzelii. Seven records are based (at least in part) on older collections, suggesting that many gaps in currently known species distributions can be filled through... |
