CR

Dendroseris pinnata

Unknown

Overview

Sonchus phoeniciformis, synonym Dendroseris pinnata, is a species of flowering plant in the family Asteraceae. It is endemic to the Juan Fernández Islands of Chile. It is threatened by habitat loss.

Dendroseris pinnata faces severe threats from invasive plant species that outcompete native vegetation and alter ecosystem dynamics on Juan Fernández Islands. Habitat degradation from introduced herbivores, particularly goats and rabbits, has severely impacted the remaining populations through direct browsing and soil erosion. The species' extremely limited range makes it highly vulnerable to stochastic events and environmental changes.

Threat summary

Habitat

This endemic species inhabits the native forests and shrublands of the Juan Fernández Islands, typically growing in rocky areas and forest margins at various elevations. It occurs in remnant patches of the islands' original vegetation, which has been severely fragmented by human activities and invasive species.

Conservation measures underway

Site/area protection

Other threatened species in ASTERACEAE

EN

Bidens cosmoides

Declining
VU

Piptolepis monticola

Unknown
Libanothamnus parvulusCR

Libanothamnus parvulus

Declining
EN

Gynoxys neovelutina

Declining

Frequently asked questions

Why is Dendroseris pinnata classified as Critically Endangered?
Dendroseris pinnata 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. Dendroseris pinnata faces severe threats from invasive plant species that outcompete native vegetation and alter ecosystem dynamics on Juan Fernández Islands. Habitat degradation from introduced herbivores, particularly goats and rabbits, has severely impacted the remaining populations through direct browsing and soil erosion. The species' extremely limited range makes it highly vulnerable to stochastic events and environmental changes.
Where does Dendroseris pinnata live?
Dendroseris pinnata 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 Dendroseris pinnata?
The main threats to Dendroseris pinnata are 2.3, 8.1, ai-1, and ai-2. The full IUCN-classified threat record for this species is detailed on the species page.

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