(First upload on July 6 2011. Last on June 22 2021) [ 日本語 | English ]

Cornus kousa Buerger ex Hance

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

Cornus (ミズキ), not naturally distributed in Japan

Cornus alba L. in northeastern China

Shiratamamizuki (シラタマミズキ, 白玉水木), red-barked, white or Siberian dogwood

紅瑞木/紅瑞山茱萸 in Chinese

Lifeform: surculose shrub - short tree
Distribution: northeastern China - Siberia - northern Korea
Habitat: moist or well-drained soil
Use: gardening (cv. aurea - yellow leaf, elegantissima, sibirica), spaethii

Thelycrania alba (L.) Pojark.
Swida alba (L.) Opiz, adopted when this genus is established
Cornus subumbellata Komatsu

var. sibirica Loud. (サンゴミズキ)

ST11 ST21 ST31
[1-3] in the animal and plant park, Changchun City, Jilin Prvince, northeastern China, on June 6 2017.

Cornus bretschneideri L. Henry in northeastern China

Toumizuki (トウミズキ, 唐水木), Bretschneider's dogwood
Lifeform: shrub ≈ 1-6 m tall
Distribution: north and northeastern China
Habitat: forests, thickets and slopes
Branch: reddish when young
1. Abaxial surface of leaves and inflorescence with short non-curly trichomes ___ var. bretschneideri
1. Abaxial surface of leaves and inflorescence with dense curly trichomes ___ var. crispa W. P. Fang et W. K. Hu

[1-3] in the Puppet Emperor Palace (満州国皇宮), Changchun, Jilin Province, northeast China, on June 15 2017.

Cornus kousa Buerger ex Hance in Japan

Yamaboushi (ヤマボウシ, 山法師/山帽子), Japanese flowering dogwood
Lifeform: deciduous tree < 10 m high
Distribution: China - Korea - Japan (Honshu), transplanted in Hokkaido
Habitat: forests in mountanious regions Seed dispersal: animal

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


Benthamidia japonica (Siebold et Zucc.) H. Hara

ssp. chinensis (Osborn) Q. Y. Xiang (ヤエヤマヤマボウシ)
f. rosea (Honda), comb. nud. (ベニヤマボウシ), syn. Benthamidia japonica (Siebold et Zucc.) H. Hara f. rosea (Honda) H. Hara

ST1 fruit2 fruit3
ST4 ST5 fruit6
[1/2, 2b] a transplanted tree at a park (Wakaba Park), N16/W4, North Ward, Sapporo, on June 13 2011. [3] an immature fruit at N25/W3, North Ward, on July 15 2011. [3b] a mature fruit at Wakaba Park on September 13 2011. [4] along a street near JR Kanda Station, Tokyo, on June 7 2019. [5/6] a tree transplanted in the Arboretum of the Faculty of Agriculture, Kagoshima University, on Mary 18 2015.

f. rosea (Honda), comb. nud. (ベニヤマボウシ)

[1-3] near Patagonia Outdoor Shop, North Ward, Sapporo. [1/2] on June 19 2021. [3] on June 14 2021.

Cornus florida L. transplzanted in Japan

Amerikayamaboushi (アメリカヤマボウシ, 亜米利加山法師, flowering dogwood)
Amerikahanamizuki (アメリカハナミズキ, 亜米利加花水木)
Lifeform: deciduous tree
Distribution: North America (imported in Meiji Era in return for the present of cherry from Japan)

Cynoxylon florida (L.) Raf. ex Jackson
Benthamidia florida (L.) Spach, adopted when this genus is established

Compared with C. kousa

Flower phenology: later (about one month)
Involucre top: concave ↔ sharp
Fruit: deep-red (drupe) ↔ red (sorosis)

[1/2] at a rooftop garden, Kanda Shrine (神田明神), Tokyo, on May 30 2014.

Cornus sericea L. in Alaska

Akayanagimizuki * (アカヤナギミズキ, 赤柳水木), redosier dogwood (* tentative translation)
Lifeform: medium to tall deciduous shrub
ssp. occidentalis (Torr. et A. Gray) Fosberg, western dogwood
Distribution: forest zones in the North America

Cornus occidentalis (Torr. et A. Gray) Coville
Cornus stolonifera Michx. var. occidentalis (Torr. et A. Gray) C.L. Hitchc.

ssp. sericea, redosier dogwood

Cornus stolonifera Michx.

[1-3] at a roadside in the campus of the University of Alaska at Fairbanks on August 10 2014.