(First upload on December 4 2003. Last on December 4 2012) [ 日本語 | English ]

Chimaphila umbellata (L.) W. Barton

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

Subfamily Monotropoideae

Chimaphila Pursh (ウメガサソウ) in Japan

Two species in Japan
C. japonica Miq. (ウメガサソウ)
C. umbellata (L.) W. Barton (オオウメガサソウ)

Chimaphila umbellata in Hokkaido


Ooumegasasou (オオウメガサソウ, 大梅笠草), pipsissewa (umbellate wintergreen) (The other common names: prince's pine, waxflower, wintergreen
Lifeform: perennial shrub
Distribution: boreal regions in the Northern Hemisphere

The southern limit of distribution in Japan: Ibaragi Prefecture, Kanto District

Habitat: dry woodlands, or sandy soil

Flora on Mount Koma
RDB: near-threatened

C. umbellata comprises a circumboreal complex

ssp. domingensis (S.F. Blake) Dorr (Dominican Republic)
ssp. mexicana (DC.) Hultén (Mexico)
var. umbellata (Eurasia) = This is on Mount Koma.
var. occidentalis (Rydb.) Blake (western North America)
var. cisatlantica Blake (eastern North America)
var. acuta (Rydb.) Blake (Arizona and New Mexico)

A few specimens have been stored in The Hokkaido University Museum (SAPS).

Koma1 Koma2 Koma3
Koma4 Koma5 Koma6
[1-4] on Mount Koma. [1] on July 21 2001 (JH Titus). [2] the establishment is often facilitated by a Salix reinii patch. [3] a clonal patch. [3] close-up of a shoot. [2-4] On the summit area of Mount Koma on July 21 2011. More than ten years have passed! [5/6] at a hill, southeast from Utonaito Swamp, central Hokkaido, on July 16 2012.