EN

Wallenia formonensis

Declining

Overview

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

Wallenia formonensis faces severe pressure from habitat destruction as Taiwan's montane forests are cleared for agriculture and development. The species' extremely limited range makes it particularly vulnerable to localized disturbances, while climate change threatens to shift suitable habitat zones beyond the species' ability to adapt. Invasive plant species further degrade the understory environments where this endemic shrub naturally occurs.

Threat summary

Habitat

This endemic species inhabits the montane forests of Taiwan, typically found in understory environments within mixed broadleaf forests at elevations between 1,000-2,500 meters. It prefers humid, shaded conditions with well-drained soils characteristic of Taiwan's temperate mountain ecosystems.

Conservation measures underway

Ex-situ conservation

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Frequently asked questions

Why is Wallenia formonensis classified as Endangered?
Wallenia formonensis 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. Wallenia formonensis faces severe pressure from habitat destruction as Taiwan's montane forests are cleared for agriculture and development. The species' extremely limited range makes it particularly vulnerable to localized disturbances, while climate change threatens to shift suitable habitat zones beyond the species' ability to adapt. Invasive plant species further degrade the understory environments where this endemic shrub naturally occurs.
Where does Wallenia formonensis live?
Wallenia formonensis 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 Wallenia formonensis?
The main threats to Wallenia formonensis 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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