Photo: Hypericum tetrapterum 1.

Flowering plants. Helsinki bot.g. (Kaisan.), Finland. Planted. 2006-08-08.
Hypericum tetrapterum Fries Engl.: square-stalked St John's-wort, St. Peter's-wort. Deu.: Geflügeltes Johanniskraut, Flügel-Johanniskraut. Sven.: kärrjohannesört, fyreggad johannesört. Dan.: vinget perikon. Fran.: millepertuis à quatre ailes. Bot. syn.: Hypericum acutum Moench, Hypericum quadrangulum L.
Personal use? Non-commercial use? Commercial use? Read the Fine Print. Comments? Tell me.
Photo: Hypericum tetrapterum 1.