Zawadsky chrysanthemum

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Chrysanthemum zawadskii Herbich

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

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Chrysanthemum (キク)

Iwagiku (イワギク, 岩菊, s.l.), Zawadsky chrysanthemum
Lifeform: rhizomatous, perennial forb
Distribution: widespread in Eurasian Continent (s.l.)

RDB: VU

Habitat: rocky sites
Chromosome number: 2n = 54
Use: gardening
Synonyms:

Chrysanthemum maximowiczii Kom.
Dendranthema zawadskii, auct. non (Herbich) Tzvelev

ssp. latilobum (Maxim.) Kitag. (マンシュウイワギク)

f. campanulatum (Makino) Kitag. (オグラギク)
f. molle (Uyeki) Kitag. (シラゲチョウセンノギク)

ssp. naktongense (Nakai) Y. N. Lee (チョウセンノギク)

var. alpinum (Nakai) Kitam. (チョウセンイワギク)
var. dissectum (Y. Ling) Kitag. (イワギク, s.s.)
Distribution: in limestone areas (Iwate Prefecture and eastern Japan)

ssp. zawadskii (シベリアノギク), the type

Chrysanthemum zawadskii grown in Hokkaido

1 2 3
[1-3] in a herb garden in Hokkaido University Botanic Garden on September 30 2023.