Razafimandimbisonia humblotii is a species of flowering plant in the family Rubiaceae. It is a tree native to Madagascar. Its IUCN conservation status is Least Concern.
Taxonomy Emmanuel Drake del Castillo described Razafimandimbisonia humblotii in 1897, and placed it in the genus Alberta. In 1968, Alberto Cavaco named the species Alberta humblotii var. obovata.
In 2009, Kent Kainulainen and Birgitta Bremer created the genus Razafimandimbisonia, moving R. humblotii and four other species into it.
Distribution Razafimandimbisonia humblotii is native to central and eastern Madagascar. It is endemic to Madagscar, and is present in Antsiranana Province, Fianarantsoa Province, and Toamasina Province.
The species grows in the seasonally dry tropical biome, in moist montane forests and rainforests. It is present at altitudes of . The species occupies an area of around , though this may be a significant underestimate. There are at least twelve subpopulations.
Description Razafimandimbisonia humblotii is a tree up to high. The leaves are leathery and persistent. The fruits are dehiscent.
Conservation In 2019, the IUCN assessed Razafimandimbisonia humblotii as of Least Concern. It is present in ten protected areas, including Andringitra National Park and Mananara-Nord National Park. The species is threatened by habitat loss, which may be caused by logging and fire.
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