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Ceratostema is a genus of shrubs or dwarf shrubs and lianas in the heather family (Ericaceae) native to tropical South America.
Ceratostema are up to 3.5 m tall, terrestrial or epiphytic shrubs with petiolate, alternate, coriaceous leaves.
The axillary, solitary inflorescence bears pedicellate, inodorous, (4-)5(-6)-merous flowers.