It is native to Oregon and California, primarily in the Coast Ranges from Douglas County to Napa and Sonoma Counties, with isolated populations in Lassen, Plumas, Santa Clara, and San Benito Counties.

[2][3] It is a member of the serpentine soils flora.

Toxicoscordion micranthum is a bulb-forming herb up to 70 cm tall and bearing as many as 60 flowers.

Flowers are white or cream-colored, sometimes with green markings, 5–12 mm in diameter hence smaller than most of the other species in the genus.

[4] Media related to Toxicoscordion micranthum at Wikimedia Commons