(First upload on November 7 2013. Last on September 26 2016) [ 日本語 | English ]

Pyrola japonica Klenze ex Alefeld

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

Pyrola L. (イチヤクソウ)
Ichiyakusou (イチヤクソウ, 一薬草), Japanese wintergreen * (* tentative)
Lifeform: evergreen perennial forb
Distribution: northeastern China - Taiwan - Korea - Japan
Habitat: forest floor

⇒ flora: Mount Koma, Mount Usu

Sepal: long ↔ P. renifolia: less
Chromosome number: 2n = 46
var. subaphylla (Maxim.) H. Anders (ヒトツバイチヤクソウ)
f. rosiflora H. Hara (オオベニバナイチヤクソウ)

Pyrola japonica in Hokkaido

Pyrola1 Pyrola2 Pyrola3
Pyrola4 Pyrola5 Pyrola6
[1-6] near the permanent plots for monitoring revegetation after the 1977-78 eruptions in the crater basin of Mount Usu. [1-3] on July 18 2013. [4-6] on June 27 2016.

var. subaphylla

[1-3] at a hill, southeast from Utonaito Swamp, central Hokkaido, on July 16 2012 (my birthday). Here, Chimaphila umbellata and C. japonica also established.