EN

Galium fosbergii

Unknown

Overview

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

Galium fosbergii faces severe threats from habitat destruction due to urban development and agricultural expansion across its limited range in the Hawaiian Islands. Invasive plant species compete directly with this endemic bedstraw for resources and space, while feral ungulates trample and degrade the native forest understory where it grows. Climate change poses an additional threat through altered precipitation patterns and increased temperatures affecting the cool, moist conditions this species requires.

Threat summary

Habitat

Galium fosbergii inhabits mesic to wet native forests in the Hawaiian Islands, typically growing in the understory of ohia-dominated forests at elevations between 300-1,200 meters. This endemic bedstraw requires cool, moist conditions and is found on volcanic soils in areas with high rainfall and cloud cover.

Other threatened species in RUBIACEAE

EN

Arachnothryx tacanensis

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CR

Arachnothryx tenorioi

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VU

Aidia abeidii

Unknown
EN

Arachnothryx tuxtlensis

Declining

Frequently asked questions

Why is Galium fosbergii classified as Endangered?
Galium fosbergii 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. Galium fosbergii faces severe threats from habitat destruction due to urban development and agricultural expansion across its limited range in the Hawaiian Islands. Invasive plant species compete directly with this endemic bedstraw for resources and space, while feral ungulates trample and degrade the native forest understory where it grows. Climate change poses an additional threat through altered precipitation patterns and increased temperatures affecting the cool, moist conditions this species requires.
Where does Galium fosbergii live?
Galium fosbergii 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 Galium fosbergii?
The main threats to Galium fosbergii 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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