EN

Wikstroemia bicornuta

Unknown

Overview

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

Wikstroemia bicornuta faces severe population decline primarily due to habitat destruction from urban development and agricultural expansion across its limited range in Hawaii. The species is particularly vulnerable to invasive plant species that outcompete native vegetation and alter soil chemistry. Fire damage from both natural and human-caused wildfires poses an additional significant threat to remaining populations.

Threat summary

Habitat

This endemic Hawaiian shrub inhabits dry to mesic forests and shrublands, typically found on volcanic slopes and ridges at elevations between 300-1,200 meters. It grows in well-drained soils among native plant communities that have become increasingly fragmented.

Other threatened species in THYMELAEACEAE

VU

Gonystylus xylocarpus

Declining
CR

Wikstroemia skottsbergiana

Declining
VU

Gonystylus nervosus

Unknown
VU

Daphnopsis nevlingiana

Unknown

Frequently asked questions

Why is Wikstroemia bicornuta classified as Endangered?
Wikstroemia bicornuta 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. Wikstroemia bicornuta faces severe population decline primarily due to habitat destruction from urban development and agricultural expansion across its limited range in Hawaii. The species is particularly vulnerable to invasive plant species that outcompete native vegetation and alter soil chemistry. Fire damage from both natural and human-caused wildfires poses an additional significant threat to remaining populations.
Where does Wikstroemia bicornuta live?
Wikstroemia bicornuta 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 Wikstroemia bicornuta?
The main threats to Wikstroemia bicornuta 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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