Tridentea pachyrrhiza
CR

Tridentea pachyrrhiza

Declining

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

Overview

Tridentea pachyrrhiza is a species of plant in the family Apocynaceae that is native to Namibia and South Africa.

Tridentea pachyrrhiza faces severe population decline due to habitat destruction from agricultural expansion and urban development across its limited range. Overgrazing by livestock has degraded the specialized arid environments this succulent requires, while illegal collection for the horticultural trade has further reduced wild populations. Climate change is intensifying drought conditions in its already marginal habitats, making recovery increasingly difficult.

Threat summary

Habitat

This succulent species inhabits rocky outcrops and gravelly slopes in arid and semi-arid regions, typically growing in well-drained soils with sparse vegetation cover. It requires specific microhabitat conditions including protection from extreme temperatures and adequate drainage to prevent root rot.

Conservation measures underway

Site/area protectionSpecies recoveryEx-situ conservation

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Frequently asked questions

Why is Tridentea pachyrrhiza classified as Critically Endangered?
Tridentea pachyrrhiza 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. Tridentea pachyrrhiza faces severe population decline due to habitat destruction from agricultural expansion and urban development across its limited range. Overgrazing by livestock has degraded the specialized arid environments this succulent requires, while illegal collection for the horticultural trade has further reduced wild populations. Climate change is intensifying drought conditions in its already marginal habitats, making recovery increasingly difficult.
Where does Tridentea pachyrrhiza live?
Tridentea pachyrrhiza occurs in Namibia, and South Africa. Country-level distribution data is sourced from the IUCN Red List and cross-referenced with GBIF occurrences.
What are the main threats to Tridentea pachyrrhiza?
The main threats to Tridentea pachyrrhiza are 1.1, 11.1, 11.2, and 3.2. The full IUCN-classified threat record for this species is detailed on the species page.

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