Northern bugleweed
Lycopus uniflorus Michx. [Lamiaceae (Labiatae)]
Ezoshirone (エゾシロネ, 蝦夷白根)
Life form: perennial forb
Distribution: northeastern China - eastern Siberia - Korea - Sakhalin - Japan - north America
Habitat: mesic site, such as fen
Lycopus L. in Japan
L. maackianus (Maxim.) Makino (ヒメシロネ)
L. lucidus Turcz. (シロネ)
var. hirtus Regel (ケシロネ)
L. ramosissimus Makino (サルダヒコ)
var. japonicus (Matsum. et Kudo) Kitam. (コシロネ)
L. uniflorus Michx. (エゾシロネ)
Lycopus uniflorus in Hokkaido
[Top/Left] a shoot. [Top/Right] close-up. [Bottom/Left] leaves. [Bottom/Right] close-pu of stem that developed flowering buds. In Tomakomai Experimental Forest on August 26 2010.