(Upload on September 4 2016) [ 日本語 | English ]

Erigeron thunbergii A. Gray

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

Erigeron L. (ムカシヨモギ)
E. thunbergii A.Gray (アズマギク, s.l.), Thunberg's fleabane
Lifeform: perennial forb with rosettes
Habitat: sunny grasslands
Seed dispersal: wind
ssp. glabratus (A. Gray) H. Hara (ミヤマアズマギク, 深山東菊)
Lifeform: alpine type
Distribution: East Asia, including Japan (north to central Honshu)
Habitat: alpine zone

Erigeron komarovii auct. non Botsch.
Aster dubius (Thunb.) Onno var. glabratus (A. Gray) T. Shimizu
Aster dubius (Thunb.) Onno ssp. glabratus (A. Gray) Kitam. et H. Hara
Erigeron alpicola (Makino) Makino
Erigeron thunbergii A. Gray var. glabratus A. Gray

var. angustifolius (Tatew.) H. Hara (アポイアズマギク)
Distribution: endemic to Mounts Apoi and Kirigishi in Hidaka District, Hokkaido

Red Data Book: extremely high risk of extinction in the wild (CR)


Aster tsuneoi Miyabe et Tatew.
Aster dubius (Thunb.) Onno ssp. glabratus (A. Gray) Kitam. et H. Hara var. angustifolius (Tatew.) H. Hara ex Kitam.
f. furusei Sugim. (シロバナアポイアズマギク)

var. heterotrichus (H. Hara) H. Hara (ジョウシュウアズマギク)
f. albus (Nakai) H. Hara (シロバナミヤマアズマギク)
f. haruoi Toyok. (ユウバリアズマギク)

ssp. thunbergii (アズマギク, s.s.)

f. leucanthus H. Hara (シロバナアズマギク)


Erigeron thunbergii in Hokkaido

[1] ssp. glabratus between Komakusa-daira Plain and Mount Akadake, central Hokkaido, on July 9 2014 (by Miyazaki N). [2-4] ssp. glabratus var. angustifolius between the fifth and seventh stations on Mount Apoi (アポイ岳), central southern Hokkaido, on June 15 2016.