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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

(First update on March 26 2009. Last July 1 2011)

Japanese elm (Wilson's elm)
Ulmus davidiana Planch. var. japonica (Rehder) Nakai
[Ulmaceae]

Harunire (ハルニレ, 春楡)

Lifeform: deciduous tree < 30 m high
Distribution: northeastern China - Korea - Japan
Habitat: mesic sites (alluvial fan - mountain)
Seed dispersal: wind


Ulmus L.

U. davidiana Planch. var. davidiana L. K. Fu [not distributed in Japan]

Synonym: U. davidiana var. mandshurica Svortsov

Ulmus davidiana Planch. var. japonica (Sarg. ex Rehder) Nakai [Japan, including Hokkaido]

Synonym: U. propinqua Koidz.

- f. suberosa (Turcz.) Nakai コブニレ)
- f. kijimae (Makino) Sugimoto (ツクシニレ)
- f. laevis Miyabe (テリハニレ)

U. parvifolia Jacquin (アキニレ) [western Japan]
U. laciniata (Trautv.) Mayr (オヒョウ) [Japan, including Hokkaido]

- var. laevigata Inokuma (テリハオヒョウ)
- var. nikkoensis Rehd. (ニッコウアツシ)


Ulmus davidiana in Hokkaido

Elm Elm
At the central campus of Hokkaido University on February 16, 2009. This species is an indicator species showing wetland.

Seeds and seedlings

Elm Elm Elm
[Left] many seeds with a stem at Yachidamo Park (Yachidamo = Fraxinus mandshurica), N28W4, West Ward, Sapporo, on May 31 2011.. [Center] The cotyledons attached with the stem on May 20 2009. [Right] the close-up.

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References

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