Parvisedum leiocarpum Sedella leiocarpa is a rare species of flowering plant in the family Crassulaceae known by the common names Lake County mock stonecrop[1] and Lake County stonecrop.

It is endemic to Lake County, California, where it is known from only about ten occurrences in two locations.

It is a resident of drying vernal pools and rocky clay flats, where it grows in colonies.

It is a tiny erect reddish or yellow succulent plant with sparse leaves each a few millimeters long.

The flowers have yellow to reddish petals 3 or 4 millimeters long.