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(First upload on May 11 2010. Last on May 4 2019) [ 日本語 | English ]

Cephalotaxus harringtonia (Knight ex Forbes) K. Koch






Mount Usu / Sarobetsu post-mined peatland
From left: Crater basin in 1986 and 2006. Cottongrass / Daylily

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.)
var. drupacea (Sieb. et Zucc. ex Miq.) Koidz. (イヌガヤ, s.s.)
Life form: evergreen needle-leaved short tree ≈ 6-10 m tall
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
Life form: evergreen needle-leaved shrub < 2 m high
Distribution: Mainly in Japan Sea side (Honshu - Shikoku) - western Hokkaido
f. fastigiata (Carr.) Rehd. (チョウセンマキ): gardening
索引

[Engler's syllabus (エングラー体系)]

Cephalotaxaceae Neger in Japan


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


ST1 ST2
[1/2] on Seyama trail in Kobe, western Japan, on March 16 2019.

var. nana

ST1 ST2 ST3
[1] dominant on the forest floor. [2] close-up of bush. [3] close-up of sampling. [1-3] on the north slope of Mount Sankaku, Sapporo City, on April 17 2010 ⇒ Mount Moiwa (藻岩山)
ST4 ST5
[4/5] cones in a small forest near GSEES, HU, on May 21 2013.

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