St. Andrew's-cross is one of our local 4-petal species of St. John's Wort. I found these growing in a dense, moist pine section of Juno Dunes Natural Area. The petals form a more distinctive "X" than H. tetrapetalum (usually even more so than this one) and the leaves are more elongate, broadest in the middle, tapering at the end and not clasping the stem. They seem less common than the 5-petal species or the 4-petal H. tetrapetalum at Juno. (Please excuse my babbling...I'm thinking out loud here as Hypericum vex and confuse me :)
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