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(First upload on January 29 2014. Last on June 27 2016) [ 日本語 | English ]

Ohwi & Kitagawa (1983) classified Torreya into Taxaceae ⇒ Engler's syllabus (エングラー体系) Torreya Arn. in Japan T. nucifera (L.) Siebold et Zucc., one species in this genus Kaya (カヤ, 榧), Japanese nutmeg-yew Life form: evergreen needle-leaved tree ≈ 20 m high Distribution: Korea - Japan (south to Tohoku District) Habitat: a component of temperate forest Leaf: sharp top Seed: utilized for food and medicine Use: go board (The Anthology of Myriad Leaves, 万葉集)

Synonyms: Taxus nucifera L. var. radicans Nakai (チャボガヤ), Syn. Torreya ascendens Nakai ex Uyeki, < 3 m high, Shikoku - Honshu var. igaensis (Doi et Morikawa) Ohwi (コツブガヤ), Torreya igaensis Doi et Morikawa, lead = 1-1.8 cm long, Honshu (rare) var. macrosperma (Miyoshi) Koidz. (ヒダリマキガヤ), Syn. Torreya macrosperma Miyoshi, seed = oblong with 30-40 mm, Honshu (rare) f. nuda (Miyoshi) Kusaka (ハダカガヤ), Syn. var. nuda (Miyoshi) Makino f. sphaerica (Kimura) Yonek. (マルミガヤ)

Torreya nucifera in Japan

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1 2 3
[1/2] on Fukuura-jima Island in Matsushima Islands, northern Honshu, on March 21 2016. [3] 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)