EN

Oxalis gagneorum

Declining

Overview

A detailed profile for this species is sourced from the IUCN Red List of Threatened Species as assessments become available.

Oxalis gagneorum faces severe threats from habitat degradation and invasive plant species that outcompete this endemic Hawaiian wood sorrel. Urban development and agricultural expansion have significantly reduced its native dry forest habitat, while non-native grasses and shrubs alter soil chemistry and light conditions essential for its survival. The species' extremely limited range makes it particularly vulnerable to stochastic events and localized disturbances.

Threat summary

Habitat

This endemic Hawaiian wood sorrel inhabits dry to mesic forests and shrublands on volcanic slopes, typically growing in well-drained soils with partial shade. It occurs in native plant communities dominated by native trees and shrubs at elevations between 300-1,200 meters.

Other threatened species in OXALIDACEAE

CR

Oxalis norlindiana

Unknown
VU

Biophytum heinrichsae

Unknown
Oxalis pennellianaEN

Oxalis pennelliana

Unknown
VU

Oxalis rufescens

Unknown

Frequently asked questions

Why is Oxalis gagneorum classified as Endangered?
Oxalis gagneorum is classified as Endangered — facing a very high risk of extinction in the wild — because population numbers are declining steeply and key habitats are under sustained pressure. Oxalis gagneorum faces severe threats from habitat degradation and invasive plant species that outcompete this endemic Hawaiian wood sorrel. Urban development and agricultural expansion have significantly reduced its native dry forest habitat, while non-native grasses and shrubs alter soil chemistry and light conditions essential for its survival. The species' extremely limited range makes it particularly vulnerable to stochastic events and localized disturbances.
Where does Oxalis gagneorum live?
Oxalis gagneorum occurs in across multiple regions. Country-level distribution data is sourced from the IUCN Red List and cross-referenced with GBIF occurrences.
What are the main threats to Oxalis gagneorum?
The main threats to Oxalis gagneorum are ai-1, ai-2, ai-3, and ai-4. The full IUCN-classified threat record for this species is detailed on the species page.

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