Itea riparia A isotype of Itea tenuinervia (Shou-Yang Liu 2893, IBK00190789, https://www.cvh.ac.cn/spms/detail.php?id=c1cf1dd4) B topotype of Itea tenuinervia (Shou-Yang Liu F000749, GXMI014126), showing two divergent carpels per fruit C specimen of Itea riparia from Myanmar (J. H. Lace s.n., E00397667, https://data.rbge.org.uk/herb/E00397667), showing two divergent carpels per fruit D lectotype of Itea thorelii (Thorel 3474, P00709632, https://science.mnhn.fr/institution/mnhn/collection/p/item/p00709632), showing two divergent carpels per fruit.