Lewisia cotyledon is a species of flowering plant in the purslane family known by the common names Siskiyou lewisia and cliff maids. It is native to southern Oregon and northern California, where it grows in rocky subalpine mountain habitat. It is a perennial herb growing from a thick taproot and caudex unit. It produces a basal rosette of many thick, fleshy oval- or spoon-shaped leaves up to 9 centimeters long. The flower cluster arises on one or more stems 10 to 30 centimeters tall, each stem bearing an array of up to 50 flowers each. Near the flowers are small, pointed leafs tipped with resin glands. The flower has 7 to 13 petals, each about 1.5 centimeters long. The petals may be pale pink with darker veining, whitish with pinkish orange striping, or solid orange to yellow.
- Klamath-Siskiyou Region