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.




A monotypic genus of the sub-family Rosoideae, allied to Cowania, from which it differs in the larger flowers, an inch or more across; in the more numerous pistils (up to twelve only in Cowania); and in having a whorl of bractlets at the base of the flower, alternating with the sepals.

Species articles