Peniocereus fosterianus
Overview
A detailed profile for this species is sourced from the IUCN Red List of Threatened Species as assessments become available.
Peniocereus fosterianus faces significant pressure from habitat conversion as the Sonoran Desert undergoes development for agriculture, urban expansion, and infrastructure projects. The species' extremely limited range makes it particularly vulnerable to localized disturbances, while illegal collection for the horticultural trade targets its distinctive tuberous root system. Climate change poses an additional threat through altered precipitation patterns that could disrupt the delicate moisture balance this desert specialist requires.
Habitat
This rare cactus inhabits rocky slopes and desert flats in the Sonoran Desert, typically growing among nurse plants like palo verde and ironwood trees. It occurs in extremely arid environments with well-drained soils, often on bajadas and in desert washes where its massive underground tuber can access deeper moisture.
