Figure 6 from: Yoichi W, Minamitani T, Oh S-H, Nagano AJ, Abe H, Yukawa T (2019) New taxa of Rhododendron tschonoskii alliance (Ericaceae) from East Asia. PhytoKeys 134: 97-114. https://doi.org/10.3897/phytokeys.134.38216 - Yoichi, Watanabe (2019)