CR

Bernoullia uribeana

Declining

Overview

Bernoullia uribeana is a rare tree species endemic to Colombia, belonging to the mallow family Malvaceae. This medium-sized canopy tree reaches heights of 15-25 meters and produces distinctive five-petaled flowers characteristic of its genus. The species exhibits smooth, grayish bark and compound leaves with serrated margins that provide important identification features in the field.

Bernoullia uribeana is restricted to humid montane forests of the Colombian Andes, typically occurring at elevations between 1,200-2,000 meters where cloud forest conditions prevail. The species favors steep slopes and ravines within primary forest fragments, often growing alongside other endemic Andean flora. Currently classified as Critically Endangered by the IUCN, this tree faces severe population decline due to its extremely limited range and ongoing habitat pressures.

Field surveys suggest fewer than 50 mature individuals remain in the wild, distributed across just two known locations in the Cordillera Oriental. The species' reproductive biology remains poorly understood, though related Bernoullia species are known to depend on specific pollinators for successful fruit set. Encouragingly, recent botanical expeditions have confirmed the species' persistence in previously unsurveyed forest patches, and local conservation groups are now working with landowners to protect remaining habitat fragments.

The Colombian government has designated critical habitat areas for this species, and seed collection efforts are underway to establish ex-situ conservation populations in botanical gardens.

Bernoullia uribeana faces imminent extinction primarily due to deforestation for cattle ranching and agricultural expansion within its restricted montane forest habitat. The species' extremely small population size makes it vulnerable to stochastic events, while habitat fragmentation has isolated remaining individuals and likely reduced genetic diversity. Climate change poses an additional threat as shifting precipitation patterns and rising temperatures alter the cloud forest conditions essential for this species' survival.

Threat summary

Habitat

This species inhabits humid montane cloud forests of the Colombian Andes at elevations of 1,200-2,000 meters. It typically grows on steep slopes and in ravines within primary forest fragments where persistent cloud cover maintains high humidity levels year-round.

Frequently asked questions

Why is Bernoullia uribeana classified as Critically Endangered?
Bernoullia uribeana 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. Bernoullia uribeana faces imminent extinction primarily due to deforestation for cattle ranching and agricultural expansion within its restricted montane forest habitat. The species' extremely small population size makes it vulnerable to stochastic events, while habitat fragmentation has isolated remaining individuals and likely reduced genetic diversity. Climate change poses an additional threat as shifting precipitation patterns and rising temperatures alter the cloud forest conditions essential for this species' survival.
Where does Bernoullia uribeana live?
Bernoullia uribeana occurs in Colombia. Country-level distribution data is sourced from the IUCN Red List and cross-referenced with GBIF occurrences.
What are the main threats to Bernoullia uribeana?
The main threats to Bernoullia uribeana are habitat loss and human disturbance. The full IUCN-classified threat record for this species is detailed on the species page.

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