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(First upload on February 14 2014. Last on April 22 2018) [ 日本語 | English ]

Tsuga sieboldii Carrière






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

Tsuga Carrière
Tsuga (ツガ, 栂), Southern Japanese hemlock
Toga (トガ)
Life form: straight-formed evergreen needle-leaved tree
Distribution: south to central Honshu, Japan, and Utsuryo Island, Korea
Habitat: rocky sites, ridges

⇒ the forest in Miyajima Island

Branch: young shoots are hairless
Cone: pendulous, brown Utilization: fabrics
Tsuga sieboldii forest in Miyajima Island
Primaeval forests with least human disturbances are distributed in Misen and northern Komagabayashi, and have been assigned as a national monument Misen Primaeval Forest. Tsuga forests lie at the center of the primaeval forest.
Based on the vertical distribution of vegetation in Japan, Tsuga forest belongs to the intermediate zone. Although Tsuga forests in Miyajima is located in Mount Misen, Komagabayashi and Mount Iwafune, the total area explained only 4.5% (1.4 km²) of the island. Because Tsuga forests remain least on most islands in Seto Inland Sea, the Tsuga forests is valuable. Tsuga forests in Miyajima are often accompanied with Chamaecyparis obtusa (Siebold et Zucc.) Endl., Pieris japonica (Thunb.) D. Don ex G. Don, Rhododendron reticulatum D. Don ex G. Don, Rhododendron lagopus Nakai var. lagopus, Davallia mariesii T. Moore ex Baker, Hymenophyllum barbatum (Bosch) Baker, etc. The forest type is classified into Pieri-Tsugetum association (Yamanaka 1961). tentatively translated (a signboard on Mount Misen, 2014-03-17)
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Tsuga sieboldii in Japan


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[1-3] on Mount Misen (弥山, 535 m elevation), Hiroshima Prefecture, on March 16 2014. [4/5] at the foot of Mount Misen on March 16 2014. [4] a bark (樹皮). [6] in the backyard of Mount Fuji Research Institute, Yamanashi Prefectural Government, on December 9 2017.

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