(First upload on June 15 2009. Last on July 10 2020) [ 日本語 | English ]

Morus bombycis Koidz.

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

Morus L. (クワ) in Japan

M. australis Poiret (ヤマグワ)
M. alba L. (カラグワ/マグワ)

var. multicaulis (Perr.) Loudon (ロソウ)

M. boninensis Koidz. (オガサワラグワ): Bonin Islands
M. cathayana Hemsley (カラケグワ/ケグワ): East Asia, including south Japan
M. kagayamae Koidz. (ハチジョウグワ): Izu Islands
M. mongolica Schneid. (チョウセングワ/モウコグワ)
M. nigra L. (クロミグワ)
M. rubra L. (アカミグワ): north America

Morus bombycis in Hokkaido

Yamaguwa (ヤマグワ, 山桑), mulberry
Lifeform: deciduous, shrbu perennial ≈ 3-10(15) in height
Distribution: China - Korea - Japan
Habitat: sunny forests

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)

Leaf shape: totally diverse (see photos below)
Seed dispersal: edible → animal

Morus australis Poiret: standard

var. maritima Koidz. (ハマグワ)
Habitat: coastsides
Leaf: larger, shiny and thicker > the type, with sharp top
Leaf tooth: sharp > the type
Fruit: 1.5-2.5 cm long > the type, occasionally biserrate

[1] near the weather observation station of Urakawa Territory, south-central Hokkaido, on June 15 2016. [2] in Keiteki-no-mori Forest (恵迪の森) in HU campus on May 21 2009. [3] at the backyard of the Institute of Low Temperature Science, Hokkaido University, on May 15 2014. [4/5] in front of Faculty of Agriculture, Hokkaido University, on June 17 2014. (bark, 樹皮). [6] a semi-giant tree in Konan Shrine (江南神社), North Ward, Sapporo, on July 4 2020. Discard or recorded: at New-Kogane Shell-mound Park, Date City, southern Hokkaido, on July 25 2013 (it was rain). In the Tokyo Garden Terrace Kioicho biotope, corridor on November 24 2017. Close to Toshiba Building near JR Hamamatsu Station in Tokyo on June 15 2018.

Leaf shape

[1-3] at a coast adjacent to Usujiri Fisheries Station of Hokkaido University, southern Hokkaido, on August 29 2016. [4] at the backyard of GSEES, HU, on September 9 2016, when a field training for Moiwa High School students was conducted. [5] in Oi Pier Seaside Park, Tokyo, on December 26 2015. Record: on a small hill near the Muroran Marine Experimental Station of Hokkaido University on September 3 2018.