Mbule or Mbulle is a small community in Cameroon, to the north of Tombel in the Southwest Region, on the slopes of Mount Kupe.

[1] In 1979 a single specimen of Ardisia koupensis was collected from the western slopes of Mount Kupe, just above Mbule.

The plant, which grows in the understorey of mid-altitude to submontane closed canopy forest, was on the 2010 IUCN Red List of Threatened Species, classified as Endangered.

[2] Mount Kupe was formerly covered in forest above around 300 metres (980 ft), but cultivation has gradually encroached.

[3] In 2008 young farmers had begun to plant oil palms in Mbulle, but they did not have a processing machine, and lacked fertilizers and chemicals.