Lomatium grayi, commonly known as Gray's biscuitroot, Gray's lomatium, or milfoil lomatium, is a perennial herb of the family Apiaceae. It is native to Western Canada in British Columbia, and the Western United States, including from the Eastern Cascades and northeastern California to the Rocky Mountains.  
It is a perennial herb found growing in dry rocky banks and slopes. It has a lifespan of 5–7 years.
Lomatium grayi has glabrous stems that split at the ground, and a long, thick taproot. It flowers from April to July with 1–20 compound umbels, each with hundreds of yellow flowers.  
- Lomatium grayi var. depauperatum — Gray's biscuitroot (M.E. Jones) Mathias; endemic to northeastern Nevada and northwestern Utah. 
- Lomatium grayi var. grayi — Gray's biscuitroot;  
The plant was used as a food source by the Northern Paiute people in Oregon, new tender stems eaten raw, and the roots as a winter 'starvation food.' 
- Habitats include: