Sedella leiocarpa
Encyclopedia
Sedella leiocarpa is a rare species of flowering plant in the stonecrop family
Crassulaceae
Crassulaceae, or the orpine family, are a family of dicotyledons. They store water in their succulent leaves. They are found worldwide, but mostly occur in the Northern Hemisphere and southern Africa, typically in dry and/or cold areas where water may be scarce...

 known by the common name Lake County mock stonecrop. It is endemic to Lake County, California
Lake County, California
Lake County is a county located in the north central portion of the U.S. state of California, north of the San Francisco Bay Area. It takes its name from Clear Lake, the dominant geographic feature in the county and the largest natural lake wholly within California...

, where it is known from only about ten occurrences in two locations. It is a resident of drying vernal pool
Vernal pool
Vernal pools, also called vernal ponds or ephemeral pools, are temporary pools of water. They are usually devoid of fish, and thus allow the safe development of natal amphibian and insect species...

s and rocky clay flats, where it grows in colonies. It is a federally listed endangered species
Endangered species
An endangered species is a population of organisms which is at risk of becoming extinct because it is either few in numbers, or threatened by changing environmental or predation parameters...

. This is an annual herb growing no more than four centimeters high. It is a tiny erect reddish or yellow succulent plant
Succulent plant
Succulent plants, also known as succulents or fat plants, are water-retaining plants adapted to arid climates or soil conditions. Succulent plants store water in their leaves, stems, and also in roots...

with sparse leaves each a few millimeters long. The flowers have yellow to reddish petals 3 or 4 millimeters long.

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