Manettia holwayi
CR

Manettia holwayi

Unknown

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

Overview

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

Manettia holwayi faces severe threats from ongoing deforestation and agricultural expansion within its extremely limited range in Costa Rica's montane forests. The species' restriction to a single location makes it exceptionally vulnerable to habitat destruction, with coffee cultivation and cattle ranching representing the primary drivers of forest conversion. Climate change poses an additional threat through potential shifts in the specific temperature and humidity conditions required by this endemic vine.

Threat summary

Habitat

This endemic vine is restricted to montane cloud forests in Costa Rica's central mountain ranges, typically occurring at elevations between 1,200-1,800 meters. It grows as an epiphytic or climbing species in the humid, moss-rich understory of primary and well-preserved secondary forests where consistent moisture and moderate temperatures prevail.

Other threatened species in RUBIACEAE

EN

Arachnothryx tacanensis

Declining
CR

Arachnothryx tenorioi

Unknown
VU

Aidia abeidii

Unknown
EN

Arachnothryx tuxtlensis

Declining

Frequently asked questions

Why is Manettia holwayi classified as Critically Endangered?
Manettia holwayi 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. Manettia holwayi faces severe threats from ongoing deforestation and agricultural expansion within its extremely limited range in Costa Rica's montane forests. The species' restriction to a single location makes it exceptionally vulnerable to habitat destruction, with coffee cultivation and cattle ranching representing the primary drivers of forest conversion. Climate change poses an additional threat through potential shifts in the specific temperature and humidity conditions required by this endemic vine.
Where does Manettia holwayi live?
Manettia holwayi 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 Manettia holwayi?
The main threats to Manettia holwayi 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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