45. Diegodendron humbertii (EDGE species)

Belongs to the monotypic genus.

Shrub 1.5 to 3 m high or small tree up to 8 m high, aromatic, hard and very dense wood. Leaves alternate, simple and leathery. Inflorescences terminal, thyrses. Flowers large, regular, hermaphroditic.

Drupaceous fruit. Phylogenetically, Diegodendron and Bixa form a robust monophyletic clade (Johnson-Fulton & Watson, 2017).

Flowering time: November-January

Population: 13 subpopulations

Lower elevation limit: 30 metres

Fruiting time: February

Trends:

Upper elevation limit: 396 metres

Distribution

D. humbertii is endemic to Northern Madagascar, in SAVA and DIANARegions of Antsiranana Province.

Number of locations: 9

EOO: 5,960 km²

AOO: 60 km²

Habitat and Ecology

Dry deciduous forests on limestone, volcanic and sandy soil.

Threats

Logging, expanding agriculture practice, slash and burn, and mining.

Conservation

This species occurs in Analamerana (Cat. IV), Ankarana (Cat. IV), Loky-Manambato (Cat. V), Montagne des Français (Cat. V) and Oronjia (Cat. V) Protected Areas.

It is reported in ex situ collections (BGCI 2022).

45. Diegodendron humbertii Capuron

EDGE Score

ED Score

GE Score