Alnus firma Siebold & Zucc.

Description: Alnus firma var. yasha, Betulaceae. Date: 1918. Source: Curtis's Botanical Magazine, London., vol. 144 [= ser. 4, vol. 14]: Tab. 8770 - [1]. Author: M.S. del., J.N.Fitch lith.

Description: English: Botanical specimen in Quarryhill Botanical Garden, Glen Ellen, California, USA. Date: 13 November 2013, 16:20:41. Source: Own work. Author: Daderot.

Description: ヤシャブシの花English: Flower YASHABUSHI. Date: 12 April 2007. Source: Akiyoshi's Room. Author: Akiyoshi's Room. Permission(Reusing this file): PD.

Description: English: Botanical specimen in Quarryhill Botanical Garden, Glen Ellen, California, USA. Date: 13 November 2013, 16:20:31. Source: Own work. Author: Daderot.

Description: English: Botanical specimen in Quarryhill Botanical Garden, Glen Ellen, California, USA. Date: 13 November 2013, 16:21:31. Source: Own work. Author: Daderot.

Curtis's botanical magazine..London ; New York [etc.] :Academic Press [etc.].biodiversitylibrary.org/page/471659