Desert Peppergrass

Desert Peppergrass (Lepidium fremontii) is often also called Desert Alyssum.
Mystery Cairn Peak and Vista Peak are visible in the background.
Lake Mead Area, Nevada. March 2008.

Desert Peppergrass is a shrub that can be found at elevations up to 4,000 feet. Its leaves are long and narrow. Its white flowers appear in spring and have four petals.