Exostema glaberrimum is a species of flowering plant in the family Rubiaceae. It is a shrub or tree native to Cuba. The species was described in 1989, and is listed as Critically Endangered by the IUCN.
Taxonomy The species was described by Attila Borhidi and Mayra Fernández in 1989.
Distribution Exostema glaberrimum is native to the wet tropical biome of Cuba. It has an estimated extent of occurrence of . The species grows in rocky areas.
Description Exostema glaberrimum is a shrub or tree.
Conservation In 2022, the IUCN assessed Exostema glaberrimum as Critically Endangered.
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