(Upload on September 23 2008) [ 日本語 | English ]

Oenothera glazioviana Micheli (Fl. bras. 13: 178. 1875)

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

Oenothera L. (マツヨイグサ)
Oomatsuyoigusa (オオマツヨイグサ, 大待宵草), large-flower evening primrose, 80-150 cm tall
Lifeform: usually categorized into biennial forb (changeable)
Distribution: originally from north America, now naturalized worldwide (exotic to Japan)
Habitat: sunny sites, such as sandy or gravely beaches

統合環境調査法実習 (fauna and flora 種リスト)

Leaf: obtuse at the top of rosette leaf, nonreddish mid-vein - cp. O. biennis
Hair: turgescent base

Oenothera erythrosepala Borbas, often used (Magyar Bot. Lapok 2:245. 1903)
Oenothera lamarckiana auct. non. Ser.


Oenothera glazioviana in Hokkaido

ST1 St2
[1/2] the plants were taken at Higashi-Kunebetsu Coast in the city of Hokuto, southern Hokkaido, Japan, on August 4 2008. [1] A whole individual. [2] close-up