Roundleaf sundew (Common sundew)
Drosera rotundifolia L. [Droseraceae]
Genus Drosera L.
Japan:
D. peltata Smith var. nipponica (Masam.) Ohwi (イシモチソウ)
D. indica L. (ナガバノイシモチソウ)
D. spathulata Labill. (コモウセンゴケ) (s.l.)
Distribution: southern Japan - southeast Asia - Australia - New Zealand
2n = 20, 40, 60
subsp. spathulata (s.s.)
subsp. tokaiensis Komiya et Shibata (トウカイコモウセンゴケ)
= D. tokaiensis (Koyiya et Shibata) Nakamura T. et Shibata C.
D. rotundiffolia L. (Mousengoke, モウセンゴケ, 毛氈苔)
2n = 20
D. anglica Hudson (ナガバノモウセンゴケ)
2n = 40
D. obovata Mert. et Koch (サジバモウセンゴケ)
Hybrid between D. anglica and D. rotundifolia
Drosera rotundifolia L.
Distribution:
North America, South America, Europe, and Asia
Habitat (nutrient-poor and sunny):
Wetlands, e.g., marshes, fens, and black spruce forest, and Sphagnum bogs.
Silty and boggy shorelines and wet sands
Open habitats, such as volcanoes.
Drosera rotundifolia on Mount Tarumae
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[1] Carpet of D. rotundifolia. [2] Close-up. Photos taken on June 12 2008
Drosera rotundifolia on Mount Koma
Specimen (D. rotundifolia) stored in SAP
Collected on the southwestern slope at ca 850 m in elevation on August 13 2000. The specimen is stored in the Hokkaido University Herbarium.
Drosera rotundifolia 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.
Drosera in Western Australia
Sorry. All photos are out of focus.
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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] October 3 2003. [2] October 2 2003.
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No Japanese name (* キノボリモウセンゴケ, 試訳 tentative translation)
Drosera macrantha Endl. subsp. macrantha (Climbing sundew / Bridal rainbow sundew). Climbing plant. Many subspecies. [1] near New Norcia, October 2 2003. [2] October 3 2003.