This birch mouse was described from Meigu in Sichuan, China. Its 2025 species treatment lists shaded tall grass in montane and subalpine forests, shrublands, meadows, and alpine grasslands.
The dorsal fur is dark brown without black stripes, the cheeks are tea yellow, and the dark-brown tail ends in a tuft of black hairs.
The species treatment lists shaded tall grass in montane and subalpine conifer forests, mixed forests, riverside shrublands, meadows, and alpine grasslands.
An extinction-risk assessment has not been added yet.