EN

Manihot hahnii

Declining

Overview

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

Manihot hahnii faces severe pressure from agricultural expansion and cattle ranching activities that fragment and destroy its native habitat. The species' restricted range makes it particularly vulnerable to localized threats, while collection pressure for horticultural trade has further reduced wild populations. Climate change poses an additional long-term threat through altered precipitation patterns affecting the dry forest ecosystems where this endemic cassava relative survives.

Threat summary

Habitat

Manihot hahnii inhabits dry tropical forests and scrublands in its restricted range, typically growing in well-drained soils on slopes and rocky outcrops. The species is adapted to seasonal drought conditions and occurs in areas with distinct wet and dry seasons.

Other threatened species in EUPHORBIACEAE

CR

Paracroton sterrhopodus

Unknown
EN

Bernardia mollis

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Bernardia oblanceolata

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VU

Mallotus macularis

Stable

Frequently asked questions

Why is Manihot hahnii classified as Endangered?
Manihot hahnii 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. Manihot hahnii faces severe pressure from agricultural expansion and cattle ranching activities that fragment and destroy its native habitat. The species' restricted range makes it particularly vulnerable to localized threats, while collection pressure for horticultural trade has further reduced wild populations. Climate change poses an additional long-term threat through altered precipitation patterns affecting the dry forest ecosystems where this endemic cassava relative survives.
Where does Manihot hahnii live?
Manihot hahnii 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 Manihot hahnii?
The main threats to Manihot hahnii 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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