Hibiscadelphus giffardianus
CR

Hibiscadelphus giffardianus

Unknown

Photo: Wikimedia Commons (CC) via https://en.wikipedia.org/wiki/Hibiscadelphus_giffardianus

Overview

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

Hibiscadelphus giffardianus faces severe threats from invasive plant species that outcompete native vegetation and alter forest composition in its restricted Hawaiian habitat. Feral ungulates, particularly pigs and goats, damage the understory through trampling and browsing, while also facilitating the spread of invasive species. The species' extremely limited population size and restricted range make it highly vulnerable to stochastic events and genetic bottlenecks.

Threat summary

Habitat

This endemic Hawaiian tree inhabits dry to mesic forests on volcanic slopes, typically found in mixed native forest communities at elevations between 300-1,200 meters. It grows in well-drained soils on lava substrates, often associated with other native Hawaiian forest species in remnant forest patches.

Conservation measures underway

Site/area protectionSpecies reintroductionLegislation

Frequently asked questions

Why is Hibiscadelphus giffardianus classified as Critically Endangered?
Hibiscadelphus giffardianus 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. Hibiscadelphus giffardianus faces severe threats from invasive plant species that outcompete native vegetation and alter forest composition in its restricted Hawaiian habitat. Feral ungulates, particularly pigs and goats, damage the understory through trampling and browsing, while also facilitating the spread of invasive species. The species' extremely limited population size and restricted range make it highly vulnerable to stochastic events and genetic bottlenecks.
Where does Hibiscadelphus giffardianus live?
Hibiscadelphus giffardianus occurs in United States. Country-level distribution data is sourced from the IUCN Red List and cross-referenced with GBIF occurrences.
What are the main threats to Hibiscadelphus giffardianus?
The main threats to Hibiscadelphus giffardianus 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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