Exostema coriaceum

Exostema coriaceum
Preserved specimen of Exostema coriaceum, consisting of twigs with brown and yellow leaves
Scientific classification Edit this classification
Kingdom: Plantae
Clade: Embryophytes
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Asterids
Order: Gentianales
Family: Rubiaceae
Genus: Exostema
Species:
E. coriaceum
Binomial name
Exostema coriaceum
Synonyms[2]
  • Cinchona coriacea Poir.

Exostema coriaceum is a species of flowering plant in the family Rubiaceae. It is a shrub native to Hispaniola. The species was described in 1804, and is listed as Data Deficient by the IUCN.

Taxonomy

The species was first described in 1804, by Jean Louis Marie Poiret, and placed in the genus Cinchona.[2] In 1819, Johann Jacob Roemer and Josef August Schultes described the species under its current name.[3] The type specimen was collected at an unknown location in Saint-Domingue.[1]

Distribution

Exostema coriaceum is native to the wet tropial biome of Haiti.[2] It is endemic to Hispaniola, and possibly the Bahamas. It is sometimes considered endemic to Haiti, though it has not been found there since the late 18th century.[1]

The species is present at elevations of 5โ€“40 metres (16โ€“131 ft), and grows in subtropical dry forests.[1]

Description

Exostema coriaceum is a small woody shrub.[1]

Conservation

In 2021, the IUCN listed Exostema coriaceum as Data Deficient, due to a lack of information on its taxonomy. Habitat loss and extreme weather may be threats to the species.[1]

References

  1. 1 2 3 4 5 6 Timyan, J. (2021). "Exostema coriaceum". IUCN Red List of Threatened Species. 2021 e.T121985694A121986685. doi:10.2305/IUCN.UK.2021-1.RLTS.T121985694A121986685.en. Retrieved 2026-07-11.
  2. 1 2 3 "Exostema coriaceum". Plants of the World Online. Royal Botanic Gardens, Kew. Retrieved 2026-07-11.
  3. โ†‘ "Exostema coriaceum Roem. & Schult". International Plant Names Index (IPNI). Royal Botanic Gardens, Kew; Harvard University Herbaria & Libraries; Australian National Botanic Gardens.