Fagara externa
CR

Fagara externa

Declining

Photo: (c) Patricio Novoa, some rights reserved (CC BY), uploaded by Patricio Novoa

Overview

Fagara externa is a species of flowering plant in the family Rutaceae. It is a tree endemic to Alejandro Selkirk Island in the Juan Fernández Islands of Chile.

Fagara externa faces severe population decline primarily due to extensive deforestation and habitat conversion for agricultural expansion across its limited range. The species' restricted distribution makes it particularly vulnerable to localized threats, with remaining populations fragmented and isolated. Ongoing logging activities and urban development continue to reduce the already critically small habitat patches where this species persists.

Threat summary

Habitat

Fagara externa inhabits tropical and subtropical forest ecosystems, typically found in primary and secondary forest formations. The species shows preference for well-drained soils in forest understory and edge environments within its restricted geographic range.

Forest· major

Conservation measures underway

Site/area protectionEx-situ conservation

Other threatened species in RUTACEAE

CR

Melicope quadrangularis

Declining
VU

Melicope wawraeana

Declining
VU

Vepris drummondii

Declining
VU

Zanthoxylum mildbraedii

Declining

Threatened in Chile

VU

Juan Fernandez Petrel

Pterodroma externa

Stable
VU

Black Petrel

Procellaria parkinsoni

Stable
VU

Chimney Swift

Chaetura pelagica

Declining
VU

Pink-footed Shearwater

Ardenna creatopus

Unknown

Frequently asked questions

Why is Fagara externa classified as Critically Endangered?
Fagara externa is classified as Critically Endangered — facing an extremely high risk of extinction in the wild — because population sizes are very small, declining sharply, or restricted to a tiny range. Fagara externa faces severe population decline primarily due to extensive deforestation and habitat conversion for agricultural expansion across its limited range. The species' restricted distribution makes it particularly vulnerable to localized threats, with remaining populations fragmented and isolated. Ongoing logging activities and urban development continue to reduce the already critically small habitat patches where this species persists.
Where does Fagara externa live?
Fagara externa occurs in Chile. Country-level distribution data is sourced from the IUCN Red List and cross-referenced with GBIF occurrences.
What are the main threats to Fagara externa?
The main threats to Fagara externa are 2.3, 5.3, 8.1, and ai-1. The full IUCN-classified threat record for this species is detailed on the species page.

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