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(First upload on September 18 2012. Last on April 30 2016) [ 日本語 | English ]

Ostrya japonica Sargent






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

Ostrya Scop. (アサダ) in Japan


7 spp. in the temperate regions of the Northern Hemisphere
One species in Japan; that is, O. japonica
Transplantation
O. virginiana (Mill.) K. Koch (アメリカアサダ)

Ostrya japonica in Hokkaido


Asada (アサダ, 浅田), Japanese hop hornbeam
Hanekawa (ハネカワ), Minokaburi (ミノカムリ) → named by the bark (樹皮)
Akaza (アカザ) → named by the red wood

Life form: deciduous, broad-leaved tree ≈ 15 m tall
Distribution: northeastern Asia, including Japan (but not in northern Hokkaido)
Habitat: (mountainous) forest

Field training on integrated environmental research (統合環境調査法実習) (出現種リスト)

Small branch: hair, glandular
Bark: rolling back after shallow vertical split
Leaf: alternate, developing glandar hair + small, young branch = glandular hair
Use: red-brown hardwood → furniture
f. homochaeta (Honda) Koji Ito (コアサダ), less glandular hair

ST1 ST2 ST3

索引

ST4 ST5
[1] a bush dominated by O. japonica in Tomakomai Experimental Forest, Hokkaido University, on August 23 2012. [2] at an unpaved parking lot on Mount Koma (駒ヶ岳flora), southern Japan, on August 4 2015. [3] in Botanic Gardens, Tohoku University, Natural Monument Aobayama, northern Honshu, on March 23 2016.
ST6 ST7 ST8
[4-8] near a bridge at the entrance of Shunbetsu River, south-central Hokkaido, on June 14 2016. I usually identify this species by the bark, when the tree is large.

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