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(Upload on December 4 2003. Last on November 7 2017) [ 日本語 | English ]

[Engler's syllabus (エングラー体系)]

Droseraceae Salisbury

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Three genera Aldrovanda L. (ムジナモ, 貉藻), waterwheel plant: monotypic, A. esiculosa L.

Dionaea J. Ellis (ハエトリグサ, 蠅捕草), venus flytrap: monotypic, D. muscipula Sol. ex J.Ellis in tropical wetlands in the North America Drosera L. (モウセンゴケ)

Drosera L. (モウセンゴケ)

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Ca 90 spp in the world (60 spp in Australia) Inflorescence: indeterminate Japan D. peltata Smith var. nipponica (Masam.) Ohwi (イシモチソウ), south to Kanto District D. indica L. (ナガバノイシモチソウ) Distribution: Africa - India - southeast Asia (central Honshu) - Ausutralia

D. spathulata Labill. (コモウセンゴケ) (s.l.): 2n = 20, 40, 60 Distribution: southern Japan (south to Miyagi Prefecture) - southeast Asia - Australia - New Zealand ssp. spathulata (s.s.) ssp. 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. (モウセンゴケ) D. anglica Hudson (ナガバノモウセンゴケ) D. obovata Mert. et Koch (サジバモウセンゴケ)

Drosera rotundifolia in Hokkaido

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Mousengoke (モウセンゴケ, 毛氈苔), Roundleaf sundew (common sundew) Lifeform: short-lived, carnivorous, perennial forb (食虫植物) Distribution: North America, South America, Europe, and Asia (see the map) 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

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).

Volcanoes

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

Wetlands

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1 2 3
4 5 6
[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.

Drosera in Western Australia

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1	2	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] October 3 2003. [2] October 2 2003.
1	2	No Japanese name (* キノボリモウセンゴケ, 試訳 tentative translation) Drosera macrantha Endl. ssp. macrantha (Climbing sundew / Bridal rainbow sundew). Climbing plant. Many subspecies. [1] near New Norcia, October 2 2003. [2] October 3 2003.