CR

Cyathea eggersii

Unknown

Overview

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

Cyathea eggersii faces severe threats from habitat destruction due to agricultural expansion and urban development in its limited Puerto Rican range. The species is particularly vulnerable to hurricane damage, which can devastate entire populations of these slow-growing tree ferns. Climate change poses additional risks through altered precipitation patterns and increased storm intensity, while invasive plant species compete for resources in its montane forest habitat.

Threat summary

Habitat

This tree fern inhabits montane rainforests and cloud forests of Puerto Rico, typically growing in moist, shaded understory environments at elevations between 300-900 meters. It requires consistently humid conditions and well-drained, organic-rich soils characteristic of tropical mountain forests.

Other threatened species in Cyatheaceae

VU

Cyathea acutidens

Unknown
EN

Cyathea gracilis

Unknown
CR

Cyathea boconensis

Unknown
CR

Alsophila major

Unknown

Frequently asked questions

Why is Cyathea eggersii classified as Critically Endangered?
Cyathea eggersii 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. Cyathea eggersii faces severe threats from habitat destruction due to agricultural expansion and urban development in its limited Puerto Rican range. The species is particularly vulnerable to hurricane damage, which can devastate entire populations of these slow-growing tree ferns. Climate change poses additional risks through altered precipitation patterns and increased storm intensity, while invasive plant species compete for resources in its montane forest habitat.
Where does Cyathea eggersii live?
Cyathea eggersii 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 Cyathea eggersii?
The main threats to Cyathea eggersii 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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