Helianthemum Canadense is a plant species commonly known as frostweed or rockrose. However, there are a few other synonyms that can be used to refer to this plant species. These include Helianthemum canadense var. canadense, Rhodax canadensis, Crocanthemum canadense, and Lechea canadensis. Frostweed is a name given to this species due to the frost-like texture that forms on the surface of the leaves and stems during cold weather. Rockrose, on the other hand, derives its name from the pinkish-purple flowers that bloom on the plant. Overall, Helianthemum Canadense is a versatile species that has multiple names depending on the location and context in which it is referred to.