Cleistocactus hoffmannii
Overview
Cleistocactus hoffmannii is a columnar cactus native to the dry inter-Andean valleys of Bolivia, where it grows as an upright, densely spined stem plant typical of the genus Cleistocactus. Its ribbed, cylindrical stems are covered in dense clusters of bristly spines, and mature individuals produce tubular flowers adapted for pollination by hummingbirds, a hallmark of the genus. The species inhabits arid and semi-arid rocky slopes and scrubland within a highly restricted geographic range, making it inherently vulnerable to localized disturbances.
Cleistocactus hoffmannii is classified as Critically Endangered (CR) on the IUCN Red List, with a population trend that continues to decrease. Its narrow distribution means that even small-scale habitat conversion, quarrying, or agricultural expansion can significantly affect the remaining wild population. Illegal collection for the ornamental succulent trade poses an additional and serious threat, as columnar Cleistocactus species are frequently sought by collectors, and unregulated harvest can quickly deplete small, fragmented populations.
On the positive side, growing international attention to Bolivian cactus diversity has spurred interest from botanical institutions in ex situ propagation and seed banking, offering a safeguard against total loss even as wild populations remain fragile. Conservation groups and regional herbaria have also begun documenting remaining populations more precisely, which is a necessary first step toward developing targeted habitat protection measures. Continued monitoring, stronger enforcement against illegal collection, and expanded propagation programs will be essential to stabilizing this Critically Endangered species and securing its long-term survival in the wild.
Cleistocactus hoffmannii faces severe population decline due to habitat destruction from agricultural expansion and urban development in its restricted Bolivian range. Mining activities and road construction have fragmented remaining populations, while illegal collection for the ornamental plant trade continues to reduce wild numbers. Climate change is altering precipitation patterns in its specialized dry forest habitat, creating additional stress on this already vulnerable species.
Habitat
This species inhabits dry inter-Andean valleys and scrublands in Bolivia, typically growing on rocky slopes and in sparse woodland areas at elevations between 1,500-2,500 meters. It requires well-drained soils and occurs in areas with distinct wet and dry seasons characteristic of the Bolivian dry forests.
Other threatened species in CACTACEAE
Threatened in Peru
Frequently asked questions
Why is Cleistocactus hoffmannii classified as Critically Endangered?
Where does Cleistocactus hoffmannii live?
What are the main threats to Cleistocactus hoffmannii?
Get weekly conservation intelligence
One short digest a week of the most striking species and country data we ship, plus breaking conservation news paired with our database where it matters.
Free, no spam. One-click unsubscribe in every email.