A new synonym of Lysionotus D. Don (Gesneriaceae)

Joe et al. published Lysionotus gamosepalus W. T. Wang var. biflorus A. Joe, Hareesh & M. Sabu in 2017 based on the specimens collected from South Tibet, China, and thought the new variety differed from L. gamosepalus in having leaves with sub-serrate margin, only two flowers from per axil inflorescence, a hairy corolla and two coiled staminodes. However, based on the examination of herbarium specimens and field investigations, we believe that the morphological characteristics of this variety are within the variation range of L. gamosepalus W. T. Wang, the distributions are sympatric, the habitat and phenology are also same. In conclusion, morphological comparisons indicate that the variety is conspecific with L. gamosepalus, we therefore reduce L. gamosepalus var. biflorus as the synonym of L. gamosepalus here.