Trifolium breweri, which has the common names forest clover and Brewer's clover, is a perennial clover that is native to mixed evergreen forests and coastal coniferous forests in southern Oregon and California. It belongs to the family Fabaceae, known for containing peas and other legumes. Its genus, Trifolium, has a cosmopolitan distribution; the densest of which is found in the Northern Hemisphere. Trifolium breweri is found in southern Oregon and California. It grows in the Klamath Range, Cascades Range, and Sierra Nevada. This plant is considered to be secure within its range. Recent Research. There was a study done about New World clovers found in mountainous regions done in 2013. Trifolium breweri is mentioned briefly as being basal within the Involucrarium clade with some of the South American species that were studied. Another study done on the molecular phylogenetics of the clover genus mentions Trifolium breweri. 218 species of Trifolium were collected and sequenced in California. The results of the study were consistent with a Mediterranean origin of the genus, probably in the Early Miocene. They believe that all of the New World species had a single origin, while the species of sub-Saharan Africa originated from three separate dispersal events.