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(First upload on September 5 2013. Last on May 19 2019) [ 日本語 | English ]

Zelkova Spach (ケヤキ) Six species in the world (1 species in Japan) Zelkova serrata (Thunb.) Makino Keyaki (ケヤキ, 欅), Japanese zelkova or Japanese elm Lifeform: deciduous tree < 30 m high Distribution: Russia - China - Taiwan - Korea - Japan (except Hokkaido) - Kuril Habitat: forests Utilization: street tree (popular in Kanto District), and high-quality wood Synonyms: Zelkova serrata (Thunb.) Makino var. formosana (Hayata) Hatus.

f. stipulacea (Makino) K. Ito (メゲヤキ) Mount Takao The representative tree of Musashino (and Japan) The leaf has two functions: photosynthesis disseminule: leaves attached with seeds assist seed dispersal for long distance like maple seeds Leaf: flushing in mid-April Autumn color: October (from green to pale brown through yellow)

Zelkova serrata in Japan

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[1] at a trail to go Yakuo-in Shrine on Mount Takao (599 m elevation), Tokyo, on October 21 2013 → Mount Takao forest for recreational use (高尾山自然休養林). [2] a giant tree (巨木) at Inuzuka (Osaka Path), Otsu City, western Japan, on March 19 2012. [3-5] at Yushima Temple (seido), Tokyo, on May 30 2014.. [3] a bark (樹皮). [6] in front of the Faculty of Engineer, Hokkaido University. Discard: a bark close to the Red Gate (Bldg-2) at the University of Tokyo on May 11 2013