Aster danyangensis, a replacement name for Aster altaicus var. uchiyamae (Asteraceae)

Aster altaicus var. uchiyamae, a Korean endemic plant, should be treated as a species rank because it is clearly distinguished from A. altaicus var. altaicus by the morphological characteristics of the plant habit, leaf width, and head size. Nevertheless, when A. altaicus var. uchiyamae was treated as a species rank, the epithet uchiyamae was unavailable in Aster owing to the earlier name A. uchiyamae, which was a replacement name for the illegitimate name A. depauperatus. Therefore, we propose A. danyangensis as a new replacement name for A. altaicus var. uchiyamae. The specific epithet danyangensis refers to the geographic location of Danyang-gun, where the species was discovered. We also designate the lectotype and isolectotype of A. danyangensis.