Collection localities of the four Hydrangea sect. Cardiandra species in this study.
Part of: Tagane S, Fujii S, Hirota SK, Naiki A, Yahara T (2022) Hydrangea marunoi (Hydrangeaceae), a new species from Osumi Peninsula, southern Japan. PhytoKeys 211: 33-44. https://doi.org/10.3897/phytokeys.211.89452