(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

Ulmus L. (ニレ)

U. americana L. (アメリカニレ)
U. davidiana Planch. (ハルニレ, s.l.)
U. parvifolia Jacquin (アキニレ), western Japan
U. pumila L. (ノニレ), transplantation
U. laciniata (Trautv.) Mayr (オヒョウ)

Ulmus davidiana in Hokkaido

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
chikisani (Ainu)
Lifeform: deciduous tree < 30 m high
Distribution: northeastern China - Korea - Japan, including Hokkaido
Habitat: mesic sites (alluvial fan - mountain)

Field training on integrated environmental research (統合環境調査法実習) (fauna and flora 種リスト)
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)

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.

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.