Rhamnus glandulosa is an unresolved species of plant in the Rhamnaceae family. It is found in Madeira and the Canary Islands. It is threatened by habitat loss. It is a tree that reaches 10 meters in height, with a gray trunk and leathery evergreen leaves sawn, with small glands in the axils of the veins. The flowers are yellow-green, arranged in clusters, and the fruit is a globose drupe, purple-black when ripe. It is an endemic species of Madeira and the Canary Islands, characteristic of the laurel forest.