Phyllodoce /ˌfɪləˈdoʊsiː/ is a small genus of plants in the heather family, Ericaceae. They are known commonly as mountainheaths, mountain heaths, or mountain heathers. They are native to North America and Eurasia, where they have a circumboreal distribution. There are four to seven or eight species in genus Phyllodoce. Even after detailed phylogenetic analyses the relationships between plants in this genus are still unclear. Species include: Hybrids between species also occur. The name Phyllodoce belongs to one of the sea nymphs of Greek mythology.