Agenus of about 170-180 species of shrubs in the family Ericaceae. These plants are native to Asia, North and South America, and Australasia. In the past, the Southern Hemisphere species were often treated in a separate genus Pernettya; however, there is no consistent reliable morphological or genetic difference to support recognition of two genera, and they are now united in the single genus Gaultheria.
The species vary from low, ground-hugging shrubs less than 10 cm tall, up to 2.5 m tall, or, in the case of G. fragrantissima from the Himalaya, even a small tree up to 5–6 m tall. The leaves are evergreen, alternate (opposite in G. oppositifolia from New Zealand), simple, and vary between species from 0.3–10 cm long; the margins are finely serrated or bristly in most species, but entire in some. The flowers are solitary or in racemes, bell-shaped, with a five-lobed corolla; flower colour ranges from white to pink to red. The fruit is a fleshy berry in many species, a dry capsule in some, with numerous small seeds.
