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Shiro TSUYUZAKI
Plant community ecology / Environmental conservation

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

(Update on July 9 2011)

Fragrant snowbell
Styrax obassia Siebold et Zucc. [Styracaceae]

Haku-unboku (ハクウンボク, 白雲木)

Lifeform: deciduous tree < 15 m in height
Stem: numerous twists and turns
Bark: smooth gray
Distribution: China - Korea - Japan
Habitat: mountains


Styrax L. in Japan

S. japonica Siebold et Zucc. (エゴノキ)

f. angustifolia (Koidz.) Sugim. (ホソバエゴノキ)
f. jippei-kawamurae (Yanagita) T. Yamaz. (オオバエゴノキ)
f. parviflora Y. Kimura (ヒメエゴノキ)
f. pendula T. Yamaz. (シダレエゴノキ)
f. rubicalyx Satomi (ベニガクエゴノキ)
f. zigzag (Koidz.) Sugim. (ガンボクエゴノキ)

var. kotoensis (Hayata) Masam. et T.Suzuki (コウトウエゴノキ)

f. tomentosa (Hatus.) T.Yamaz. (オオバケエゴノキ)

S. obassia Siebold et Zucc. (ハクウンボク)
S. shiraiana Makino (コハクウンボク)

var. hayatana (Perkins) K. Mori (コウシュンエゴノキ)


Styrax obassia in Hokkaido

ST ST ST
[Left] in Tomakomai Experimental Forest on September 10 2009. [Center/Right] Along a roadside at N25/W3, North Ward, Sapporo, on June 13 2011. This tree is transplanted for a boulevard tree.


References

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