(First upload on September 18 2007. Last on October 6 2023) [ 日本語 | English ]
Mount Usu / Sarobetsu post-mined peatland
From left: Crater basin in 1986 and 2006. Cottongrass / Daylily
HOME > Plant list (植物リスト) > Salicaceae (ヤナギ科) > Salix reinii
Salix L. (ヤナギ)Mineyanagi (ミネヤナギ, 峰柳), Japanese willow or Miyama willow (tentative)Miyamayanagi (ミヤマヤナギ, 深山柳) Lifeform: deciduous shrub ≈ 1-2 m tall (or less → higly variable, occasionally becoming at 5 m tall in lowland) Distribution: Japan and southern Kuril Islands (Ohwi & Kitagawa 1983) Habitat: alpine and subalpine zones, serpentine zones
often on volcanoes in Hokkaido (e.g., Eniwa and Yotei) |
Salix reinii Franch. et Sav. ex Seemen f. cyclophylloides (Koidz.) Kimura ex Ohwi et Kitag., nom. nud. f. pendula Kimura (シダレミネヤナギ) |
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[1] a S. reinii patch with flowering Platanthera metabifolia on July 18 1996. The relationships of these two species may be explained by facilitation (定着促進効果) (Uesaka & 2004). [2] a black instrument on the ground surface is a PAR sensor on June 27 2005. [3] on June 16 2015.
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[4/5] leaf flushing with inflorescences on May 18 2012. [6] Snow was accumulated in the leeward of S. reinii patches that functioned as a shelter to prevent from frost injury (on November 21 2005. The patches greatly change the microclimate (Tsuyuzaki et al. 2012).
Fig. Ectomycorrhizae from the roots of S. reinii. M: mantle. The sample was collected from the southwest slope of Mount Koma (Tsuyuzaki et al. 2005)
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[1] a patch. [2] close-up of inflorescences. On June 12 2008.
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[1/2] at the summit on June 28 2023.
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[1-3] near the summit on June 28 2014.
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[1] near the bothie (hut escaped from mountainous disasters) of Mount Tokachi, central Hokkaido, on June 27 2017.
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[1/2] on the middle slope of Mount Mashu, eastern Hokkaido, on June 26 2019.