31. Rhynchophora humbertii (EDGE species)

Belongs to the ditypic genus: R. humbertii and R. phillipsonii; Tribe: Rhynchophoreae. Climbing shrub with a rounded stem. Leaves deciduous, opposite, simple. Inflorescences terminal or axillary, umbellate, arranged in small loose panicles. Fruit indehiscent, winged; wings borne around the apex of the fruit giving the whole fruit a helicopter-like appearance.

Phylogenetically, Rynchophora is within the Madagasikaroids clade, it is closely related to the monotypic genus Madagasikaria (Davis & al., 2004).

Flowering time: January-March

Population: 6 subpopulations

Lower elevation limit: 500 metres

Fruiting time: February-March

Trends:

Upper elevation limit: 1,250 metres

Distribution

R. humbertii is endemic to the southern part of Madagascar, in Toliara Province (Atsimo-Andrefana and Anosy Regions).

Number of locations: 4

EOO: 1,397 km²

AOO: 24 km²

Habitat and Ecology

Subarid deciduous, seasonally dry forests and thickets, subhumid and humid forests, on sand, basalt, siliceous sand or calcareous soils.

Threats

Firewoods collection, wildfires, agricultural practices and grazing.

Conservation

This species occurs in Analavelona sacred forest (Cat. III) and Zombitsy-Vohibasia (Cat. II) Protected Areas.
It is not reported in ex situ collections (BGCI 2022).

31. Rhynchophora humbertii Arènes

GE Score

EDGE Score

ED Score