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(First upload on Jan. 8 2008. Last on October 13 2016) [ 日本語 | English ]

Weigela hortensis (Siebold et Zuccarini) K. Koch






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

Weigela Thunb. (タニウツギ)


Hokkaido (three species)
W. coraeensis Thunberg (ハコネウツギ)
W. decola (Nakai) Nakai (ニシキウツギ)

var. amagiensis (Nakai) Hara (アマギベニウツギ)
f. nivea Sugimoto (シロバナニシキウツギ)
f. unicolor (Nakai) Hara (ベニバナニシキウツギ)

W. floribunda (Sieb. et Zucc.) K. Koch (ヤブウツギ): eastern Honshu - Shikoku

f. kariyosensis (Nakai) Hara (ニシキビロードウツギ)
f. leucantha Honda (シロバナヤブウツギ)

W. florida (Bunge) A. DC. (オオベニウツギ): Kyushu
W. hortensis (Sieb. et Zucc.) Koch. (タニウツギ)
W. japonica Thunberg (ツクシヤブウツギ): Kyushu - Shikoku
W. maximowiczii (S. Moore) Rehd. (キバナウツギ): Honshu (north to Yamanashi and Nagano)

W. middendorffiana (Carrière) K. Koch (ウコンウツギ)
W. sanguinea (Nakai) Nakai (ケウツギ): central Honshu

Weigela hortensis in Hokkaido


Tani·utsugi (タニウツギ, 谷空木) (many other Japanese common names), (oldfashioned) weigela
Beni-utsugi (ベニウツギ, 紅空木)
Lifeform: deciduous shrub < 5 m in height
Distribution: endemic to Japan (from western Hokkaido to Japan Sea-side of Honshu)
Habitat: disturbed areas, including secondary forests (often developing the shrublands)

Mount Koma (flora)

Flower: pink ↔ W. middendorffiana: pale yellow
Utilization: gardening, medicine, food (bud), etc.
f. albiflora (Sieb. et Zucc.) Rehder (シロバナウツギ, シロバナタニウツギ)
索引
of Mount Koma

Weigela1 Weigela2 Weigela3
Weigela4 Weigela5
[1] on the southwest slope on July 4 2002. [2] at the summit on June 15 2010. [3] on the southwest slope on June 11 2002, and [4/5] on June 18 2014.

Weigela6 Weigela7 Weigela8
[6] at a riverside for field training on integrated environmetns near Usujiri, southern Hokkaido, on June 16 2015. [7/8] probably a transplanted tree in front of the office building of Shizunai Experimental Farm of Hokkaido University, south-central Hokkaido, on June 17 2016.

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