Genus Helwingia is a plant genus that belongs to the family Helwingiaceae. This genus is native to Asia, Europe, and North America. It is characterized by small trees and shrubs that have simple, alternate leaves and dioecious flowers. The genus Helwingia is also known by several synonyms. These include Daphnidium, Hemimyrsine, and Corniopsis. Some of these synonyms are based on the similarities of the plant's physical features with other genera. The different names used for this genus indicate the changes in taxonomy over time. Nevertheless, the various synonyms all refer to the same group of plants, the members of which share similar features and traits.