Giant sweet coltsfoot
Petasites japonicus (Sieb. et Zucc.) Maxim.
var. giganteus (Fr. Schm.) Hort. ex Nichols
[Asteraceae]
Oobuki (オオブキ, 大蕗)
Life form: perennial forb
Distribution: Japan, Korea, Russian Far East, Sakhalin, Kurile, China
Habitat: mesic sites
Petasites Mill. in Japan
P. fragrans Presl (ニオイカントウ)
P. japonicus (Sieb. et Zucc.) Maxim. (フキ)
- subsp. giganteus (Fr. Schm.) Kitam. (オオブキ/アキタブキ)
Petasites japonicus var. giganteus on Mount Usu
On late April, 1984, when I was in Master's course.
This individual attaches deformed vegetative leaves on reproductive stalks. On April 29, 1988.
References
Nomen number: 105034.
Place of publication: Ill. dict. gard. century suppl. 591. 1900.
Synonym
Nordosmia: Petasites japonicus Maxim. = (syn.) Nordosmia japonica Sieb. et Zucc.
Petasites japonicus (Sieb. et Zucc.) Maxim. subsp. giganteus (Fr. Schm. ex Trautv.) Kitam.
Petasites amplus Kitam. (Acta Phytotax. Geobot. 1932, p. 115)
Petasites liukiuensis Kitam. (Acta Phytotax. Geobot. 1933, p. 178)
Petasites japonicus - Listing of useful plants of the world Webpage