(First upload on August 4 2010. Last on March 31 2018) [ 日本語 | English ]

Phryma leptostachya L. ssp. asiatica (H. Hara) Kitamura

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

[Engler's syllabus (エングラー体系): one species, Cronquist]

Phrymaceae Schauer (ハエドクソウ), established by APG III

Tubular: toothed calyces with five lobes
Stigmas: two lamellas with sensitive inner surfaces, that close together on contact with a pollinator
Capsules: readily dehiscent in the length between the partitions of the locule
Subfamily Mazoideae (サギゴケ)
Mazus Lour. (サギゴケ)
Lancea Hook. f. et Thomson
Subfamily Phrymoideae (ハエドクソウ)
Mimulus L. (ミゾホオズキ)
Dodartia L.
Glossostigma Wight et Arn.
Peplidium Delile
Phryma L. (ハエドクソウ)
Leucocarpus D. Don
Berendtiella Wetlst. et Harms
Hemichaena Benth.
Elacholoma F. Muell. et Tate

Phryma leptostachya in Hokkaido

Phryma L. (ハエドクソウ)
P. leptostachya L.

Seed dispersal (種子散布): animal
ssp. asiatica (H. Hara) Kitamura
Haedokusou (ハエドクソウ, 蝿毒草), Asian lopseed
Life form: perennial forb
Distribution: east Asia, including Japan
Habitat: forest floor

Field training on integrated environmental research (統合環境調査法実習) (fauna and flora 種リスト)
flora on Mount Usu

Poison: phrymarolin (the Japanese name means Toxin Grass to Fly)

f. oblongifolia (Koidz.) Ohwi (ナガバハエドクソウ)

ssp. leptostachya (アメリカハエドクソウ)

[1] at the foot of Mount Yosomi, which erupted in 1910, on July 23 2010. Yosomi is a part of the Usu Craters. [2] at Denshinhama Coast, Muroran City, on September 11 2017. [3/4] at the Philosophy Road in the Hokkaidod University Campus [2/3] on August 15 2011. [4] on August 6 2012. [5-7] in a waste land, N12/W4, North Ward, Sapporo, on August 20 2016. Records: near the 4th Crater on Mount Usu on August 13 2019.