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Hypericum perforatum L.

Flora Europaea the original Linnean specimen perennial, H, 2n=32, tetraploid xeric to mesic and even mesohygrophyle Palearctic Festuco-Brometea, Arrhenatheretalia, Koelerio-Corynephoretea, Prunetalia, Atropion, Nardion, Sedo-Scleranthetea, Origanetalia, Dauco-Melilotion, Artemisietea R34, R37, R38, R87 habitats     The most common St. John's worh from Eurasia. north of the Valcan massif, in mountainous meadows, near Blajeni-Vulcan, July 2005 dr. Alexandru Badarau, alexandru@transsilvanica.com