Razafimandimbisonia orientalis is a species of flowering plant in the family Rubiaceae. It is a tree endemic to Madagascar.
The species was described in 1965, and moved to its current genus in 2009. The IUCN classifies Razafimandimbisonia orientalis as Vulnerable.
Taxonomy Razafimandimbisonia orientalis was first validly published in 1965, by Anne-Marie Homolle. It was initially classified in the genus Alberta. In 2009, the species was moved to the newly created genus Razafimandimbisonia, along with four other species.
Distribution It is native to the seasonally dry tropical biome of south-east Madagascar. It is endemic to Madagascar, and occurs in Fianarantsoa Province and Toliara Province. Its extent of occurrence is around .
Razafimandimbisonia orientalis occurs in humid and coastal forests. It grows in rocky and sandy soils. It is found at elevations of .
Type material has been collected near the Mananjary River, in Vatovavy.
Description Razafimandimbisonia orientalis is a tree that grows up to tall.
Conservation In 2019, the IUCN assessed Razafimandimbisonia orientalis as vulnerable. It is at risk from habitat loss due to fire, mining, and deforestation. The species occurs in two protected areas (Tsitongambarika and Ankarabolava).
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