Strobilanthes wallichii (Acanthaceae), a newly recorded species in Taiwan

Strobilanthes wallichii Nees (Acanthaceae) is reported for the first time in Taiwan. This species can be distinguished from its congener in Taiwan by having attenuate leaf base and deeply 5-divided calyx. Taxonomic description, distribution information, pollen SEM micrographs, and color photographs are provided for this newly recorded species. Key to all known species of Strobilanthes sensu lato in Taiwan and detailed comparison between this new record and closely related species are also provided to aid in identification.