A modern reference to temperate woody plants, including updated content from this site and much new material, can be found at Trees and Shrubs Online.
Hypericaceae
A small genus of N. American plants closely allied to Hypericum, but well distinguished by having four sepals and petals instead of five.
Ascyrum is no longer recognised as a genus distinct from Hypericum, the tetramerous corolla characterising this group being of too trivial a nature to justify generic or even sectional rank. The species described – A. hypericoides L. – becomes H. hypericoides (L.) Crantz.
Some names used by Bean have now been superseded and are no longer familiar. To ensure that all plants can be easily found, under any name, we have cross-referenced to The Plant List, a collaboration between RBG Kew, Missouri Botanical Gardens and other organisations, which aims to provide a currently accepted name for any plant. Not all taxonomists will agree with all Plant List nomenclature, but it provides a baseline to compare names. For each species above, clicking on the Modern Name will link to the entry for that name on The Plant List website.
