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(First upload on May 11 2010. Last on July 31 2021) [ 日本語 | English ]

Cephalotaxus Siebold et Zucc. ex Endl. (イヌガヤ) Inugaya (イヌガヤ, 犬榧), Japanese plum yew Distribution: endemic to eastern Asia Habitat: deciduous-forest floor C. harringtonia (Knight) K. Koch (イヌガヤ, s.l.) Lifeform: evergreen needle-leaved tree var. drupacea (Sieb. et Zucc. ex Miq.) Koidz. (イヌガヤ, s.s.) Stem: tree ≈ 6-10 m in height Distribution: northern China - Korea - Japan (not in Hokkaido)

var. nana (Nakai) Rehder Hai-inugaya (ハイイヌガヤ, 這犬榧), dwarf Japanese plum yew Distribution: Mainly in Japan Sea side (Honshu - Shikoku) - western Hokkaido Stem: shrub < 2 m high Leaf: slimmer and shorter than var. drupacea f. fastigiata (Carr.) Rehd. (チョウセンマキ) Leaf: spiral arrangement Use: a cultivar for gardening

[Engler's syllabus (エングラー体系)]

Cephalotaxaceae Neger in Japan

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Etymology: cephalo (head) + taxus (yew) Three genera: Amentotaxus Pilg.

Cephalotaxus Siebold et Zucc. ex Endl., one species in Japan (C. harringtonia)

Torreya Arn. One species in one genus (Cephalotaxus) is distributed in Japan

Cephalotaxus harringtonia in Japan

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var. drupacea (イヌガヤ, s.s.)

1 2 3
[1/2] on Seyama trail in Kobe, western Japan, on March 16 2019. [3] at a house garden in N27/E2, East Ward, Sapporo, on March 31 2021.

var. nana (ハイイヌガヤ)

1 2 3
4 5 6
7
[1-3] on the north slope of Mount Sankaku, Sapporo City, on April 17 2010 (☛ Mount Moiwa, 藻岩山). [4/5] cones in a small forest near GSEES, HU, on May 21 2013. [6] male flowers (winter buds) at a hedge in Sapporo on February 20 2020. [7] along Katsura Course in Nopporo Forest Park on July 17 2021.