Abstract
Various Thermopsis species are found in the foothills and plains of the Rocky Mountains. There are no reported cases of human ingestion to Thermopsisreported in the literature. We report 5 cases of ingestion of seeds or flowers where the primary symptoms were nausea, vomiting and headache of several hours duration. As few as 6 seeds produced symptoms. The common names used by parents when calling the poison center could have easily lead to misidentification and a careful history and subsequent professional identification were required to ascertain the actual plant involved.