Inflorescences of Rehderodendron burmanicum, Pterostyrax corymbosus Siebold & Zucc. and R. microcarpum. A inflorescence of R. burmanicum, showing flowering shoots comprising only inflorescences, flowers not strictly arranged on one side of ultimate inflorescence branches and (red arrow) stamens longer than the petals B inflorescence of P. corymbosus, showing flowering shoots comprising both inflorescences and (red arrow) leaves and flowers arranged on one side of ultimate inflorescence branches C inflorescences of R. microcarpum, showing flowering shoots comprising only inflorescences, flowers not strictly arranged on one side of ultimate inflorescence branches and stamens that are shorter than the petals. (Photographs: A from the holotype of R. burmanicum B by Wan-Yi Zhao from Jinggangshan, Jiangxi, China C by Wan-Yi Zhao from Gongshan, Yunnan, China).