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(First upload on July 8 2016. Last on January 11 2025) [ 日本語 | English ]

Oenothera L. (マツヨイグサ) Komatsuyoigusa (コマツヨイグサ, 小待宵草), cutleaf evening-primrose Lifeform: biennial/perennial forb Distribution: native to the North America → immigrated to Asia and Africa reported from the whole of Japan (firstly reported in 1910's) Hokkaido Blue List: D

Habitat: seasides, open lands, riversides, etc. f. integrifolia Jansen et Kloos (マルバコマツヨイグサ) var. grandiflora (S. Watson) B. L. Rob. (オオバナコマツヨイグサ, syn.) = Oenothera grandis (Britton) Smyth

Oenothera laciniata in Hokkaido

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1 2 3
4 5 6
[1-4] in Oi Pier Seaside Park, Tokyo, on June 3 2016. [5/6] in the backyard of the office building for Wakayama Experimental Forest of Hokkaido University, western Japan, on June 25 2024.