Template:Koidzumi, 1913a
- Koidzumi, G. 1913. Conspectus Rosacearum Japonicarum sive Monographia Rosacearum ex insulis Kurile, Sachalin, Yezo, Honto, Sikoku, Kiusiu, Liukiu, Bonin, et Formosa hucusque certe cognitarum. The Journal of the College of Science, Imperial University of Tokyo 34(2): 1–312. BHL