<p>A total of 479 leaves of five species (99 <em>Quercus acutissima</em>, 166 <em>Zelkova serrata</em>, 77 <em>Prunus × yedoensis</em>, 49 <em>Morella rubra</em>, and 88 <em>Ficus erecta</em>) were sampled at the Ito Campus of Kyushu University from August 2021 to November 2021.</p>