Tilia japonica Simonk.

Distribution : China (Anhui, Jiangsu, Shandong, Zhejiang), Japan
Pictures 1 & 2 in Japan, Honshu, Chuzenji Lake, June 2010
Picture 3 in Japan, Honshu, Nikko, June 2010 (cultivated)

Description in Math. Termesz. Kozlem. Magyar Tudom. Akad. 22: 326 (1888)