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(Upload on December 17 2020) [ 日本語 | English ]

[ Engler's syllabus (エングラー体系) ]

Eucommiaceae Engl. (トチュウ)

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Fossil: showing the distribution of this family was broader One present species in one genera is grouped into this family, that is: Eucommia Engl. (トチュウ) E. ulmoides Oliv. Tochuu (トチュウ, 杜仲), hardy rubber tree, Gutta-percha tree, or Chinese rubber tree Lifeform: deciduous tree = 15-20 m in height Distribution: China (near threatened in wild) imported to Japan in 1918

Habitat: mixed forests, sparse forests, thickets, lower mountains and dry ravines Use: bark used for traditional Chinese medicine (大防風湯, etc.)

Eucommia ulmoides transplanted in Hokkaido

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[1-3] in Experimental Station for Medical Plant Studies, Faculty of Medicine, Hokkaido University, on November 16 2020.