Exostema salicifolium is a species of flowering plant in the family Rubiaceae. It is a shrub or tree with subleathery leaves, a purplish corolla, and capsule fruits. The species is native to Cuba.
Exostema salicifolium is native to Cuba, and is listed as Critically Endangered by the IUCN.
Taxonomy The species was described by August Grisebach in 1866. The type locality is in western Cuba.
Distribution Exostema salicifolium is native to the wet tropical biome of Cuba. It has only been reported from a single location.
Description Exostema salicifolium is a shrub or tree. It grows to around high. The branches are slender and greyish.
The leaves are up to long. The leaves are subleathery, oblong-oblanceolate or narrowly elliptical-oblong, long, and wide.
The flowers are solitary, and grow on stems. The hypanthium is oval-elliptic, and long. The calyx has minute lobes. The corolla is purplish on the outside, and white on the inside. The corolla tube is around long, and has five lobes.
The fruit is an ellipsoid capsule, measuring long.
Conservation In 2022, the IUCN assessed Exostema salicifolium as Critically Endangered. It may be extinct.
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