Wikipedia:Good topics/Hypericum sect. Androsaemum
Hypericum sect. Androsaemum, commonly called tutsan, is a section of flowering plants in the family Hypericaceae. It is made up of Hypericum androsaemum (its type species), H. foliosum, H. grandifolium, and H. hircinum, as well as the hybrid H. × inodorum. Members of the section are deciduous shrubs of medium size. They are characterized by their lack of hairs and by not having small dark glands. Plants possess clusters of many yellow flowers, each of which has several dozen male reproductive stamens, as well as a seed capsule that regularly dry out and split open. The habitat of most of the species is in evergreen forests, and all but H. hircinum prefer damp shady areas. There are no species in Androsaemum that are considered to be in danger of extinction, and the section is distributed widely across Europe, Africa, and Western Asia. Its species have become invasive in numerous locations after escaping from gardens in non-native environments, including in Australia, California, and much of Western Europe.
