(Upload on December 4 2003. Last on May 31 2022) [ 日本語 | English ]

Drosera rotundifolia L.

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

Drosera L. (モウセンゴケ)
Mousengoke (モウセンゴケ, 毛氈苔), Roundleaf sundew (common sundew)
Lifeform: short-lived, perennial forb
Distribution (map): North America, South America, Europe, and Asia
Habitat: nutrient-poor and sunny sites (wetlands (湿原), e.g., marshes, fens, and black spruce forest, and Sphagnum bogs / silty and boggy shorelines and wet sands / baregrounds on volcanoes)

Flora on Mount Koma

Leaf: insectivorous leaf (捕虫葉), rosette
Chromosome number: 2n = 20
var. gracilis Laest., small-leaved in Alaska
Mount Koma. The specimen was collected on the southwestern slope at ca 850 m in elevation on August 13 2000, and was stored in the Hokkaido University Herbarium (SAPS).

Drosera rotundifolia in Hokkaido


Drosera1 Drosera2
[1/2] Mount Tarumae on Juen 12 2008. [1] Carpet of D. rotundifolia. [2] close-up.


ST1 ST2 seed3
[1/2] in a post-mined peatland, Sarobetsu mire, northern Hokkaido. [1] on July 13 2013. [2] on June 7 2005 by Hoyo (保要博士). [3] seed taken by a microscope (VHX-2000, KEYENCE/キーエンス), on April 21 2012. The seed was collected from a post-mined Sarobetsu mire by Hoyo. Compare to the seeds of D. anglica. [4/6] in Shizukari Wetland, southern Hokkaido. [4] on June 15 2015. [5/6] on July 7 2017. Records: in Abira wetland, central Hokkaido, on June 16 2020.

Drosera worldwide

Western Australia, Australia
Drosera1 Drosera2 Sorry, all photos are a bit out of focus.
No Japanese name (* ドラモンドコモウセンゴケ, 試訳 tentative translation)
Drosera barbigera Planch. (Drummond pygmy sundew). This species is distributed only in Western Australia
[1] on October 3 2003. [2] on October 2 2003.
Drosera1 Droeera2 No Japanese name (* キノボリモウセンゴケ, tentative translation)
Drosera macrantha Endl. ssp. macrantha, climbing sundew or bridal rainbow sundew. Climbing plant. Many subspecies.
[1] near New Norcia on October 2 2003. [2] on October 3 2003.
Queensland, Australia
Drosera1 Drosera2 Tsurugibamousengoke ツルギバモウセンゴケ (剣葉毛氈苔), lance-leaved sundew or Adelaide sundew
Drosera adelae F. Muell.
Distribution: endemic to Queensland
[1/2] at Sakuya Konohana Kan (咲くやこの花館) located in Osaka, western Japan, on February 6 2022.
Drosera1 Drosera2 Afurikanagabanomousengoke (アフリカナガバノモウセンゴケ, 阿弗利加長葉ノ毛氈苔), Cape sundew
Drosera capensis L.
Lifeform: perennial forb
Distribution: Cape in South Africa
Habitat: marshes, along streams, permanent seeps or damp areas of fynbos

[1/2] at Sakuya Konohana Kan (咲くやこの花館) located in Osaka, western Japan, on February 6 2022.