Scirpus clementis) is a species of flowering plant in the sedge family known by the common name Yosemite bulrush.

[1] It is endemic to the Sierra Nevada of California, where it is known from high-elevation mountain meadows and streambanks.

It is a perennial herb forming a dense tuft of erect, ridged stems up to 12 centimeters (4.7 in) tall.

At the tip of each stem is the inflorescence, a clublike spikelet less than a centimeter long which is composed of a few tiny flowers.

The flowers produce smooth dark fruits that are achenes no more than 2 millimeters (0.079 in) long.