(First upload on March 26 2009. Last March 6 2020) [ 日本語 | English ]

Ulmus davidiana Planch. var. japonica (Rehder) Nakai

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

U. davidiana Planch.
var. davidiana L. K. Fu
Distribution: not distributed in Japan

U. davidiana var. mandshurica Svortsov

var. japonica (Sarg. ex Rehder) Nakai
Harunire (ハルニレ, 春楡), Japanese elm, or Wilson's elm
Lifeform: deciduous tree < 30 m high
Distribution: northeastern China - Korea - Japan, including Hokkaido
Habitat: mesic sites (alluvial fan - mountain)

HUSTEP: Plants and Plant communities in Japan (flora list)

Seed dispersal: wind

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)
Mary's elm (メリーさんのハルニレ)
♠ coupled holy-trees in Nakanoshima Shrine (中の島神社の夫婦御神木)

Ulmus davidiana in Hokkaido

Elm1 Elm2 Elm3
[1] at the central campus of Hokkaido University on February 16, 2009. This species is an indicator species showing wetland. [2/3] near the training hall of Japanese archery, Hokkaido University, on October 15 2018. Records: in Maeda Forest Park on May 30 2020.

Seeds and seedlings

Elm4 Elm5 Elm6 Elm7
[4] many seeds with a stem at Yachidamo Park (Yachidamo = Fraxinus mandshurica), N28E4, East Ward, Sapporo, on May 31 2011. [5] stemflow on a bark in the cortile of GSES on February 13 2020. [6] the cotyledons attached with the stem on May 20 2009. [7] insect galls of Tetraneura nigriabdominalis (オカボノクロアブラムシ) and its relatives, such as T. sorini, in front of Jaenne Restaurant on N21/W3, North Ward, Sapporo, on July 3 2018.