Aaron’s Beard Hypericum calycinum
Also called ‘Creeping St. John’s Wort’ ‘Jerusalem Star’ or ‘Rose of Sharon’
Means: Hypericum translates as “above a picture” referring to the fact that in ancient cultures cuttings of this genus were hung above pictures to ward off evil spirits.
Calycinum translates as “with a conspicuous calyx” referring to the portion of the corolla structure that lies beneath the yellow petals.
N.B. This is not the medicinal St. John’s Wort, though it is sometimes called ‘Greater St. John’s Wort’ Hypericum Perforatum is the medicinal plant. It has smaller flowers which have perforations around their edges.