Long, David G., and Tian-Xiong Zheng. 2023. “A New Subfamily Calasterelloideae and New Genus Calasterella For a Phylogenetically and Morphologically Distinct Member of the Aytoniaceae”. Phytotaxa 606 (3). Auckland, New Zealand:225-30. https://doi.org/10.11646/phytotaxa.606.3.6.