Mahonia microphylla
Overview
A detailed profile for this species is sourced from the IUCN Red List of Threatened Species as assessments become available.
Mahonia microphylla faces significant pressure from habitat conversion as its montane forest ecosystems are cleared for agriculture and urban development. The species' restricted range in the mountains of western North America makes it particularly vulnerable to climate change, as warming temperatures force suitable habitat to higher elevations with limited available space. Overgrazing by livestock in some areas has degraded the understory vegetation where this shrub naturally occurs.
Habitat
Mahonia microphylla inhabits montane coniferous forests and woodland edges at elevations between 1,500-3,000 meters in the western United States and southwestern Canada. The species typically grows in the understory of pine, fir, and spruce forests, preferring well-drained soils on rocky slopes and canyon walls.