Wild plants in and around Shimane 島根とその周辺の野生植物


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Oenothera biennis / Mematsuyoigusa メマツヨイグサ

Bloom time: June-September

Onagraceae /


Species in the genus Oenothera:

Oenothera biennis / Mematsuyoigusa
Oenothera glazioviana / Oomatsuyoigusa
Oenothera grandis / Oobanakomatsuyoigusa
Oenothera rosea / Akabanayuugeshou
Oenothera speciosa / Hiruzakitsukimisou


Oenothera biennis / Mematsuyoigusa メマツヨイグサ

Oenothera biennis,  a biennial herb originating in North America, grows wild on roadsides, wastelands, or riversides. Stems branch well at lower portions and rise to 0.5-1.5m, with hairs facing upward. Leaves are in a long-oblong-like lanceolate, with sharp tips and shallow serrations on the margins. Flowers, yellow, measure 2-5cm in diameter. Capsules are cylindrical, 2-3cm in length. Bloom time: June-September.




inserted by FC2 system