Physaria tenella is a species of flowering plant in the family Brassicaceae known by the common names Moapa bladderpod and slender bladderpod.

It is native to western North America from Utah to Sonora, where it grows mainly in desert habitat.

This is an annual herb producing several hairy multibranched erect to spreading stems sometimes exceeding half a meter long.

The mustardlike flower has four orange to bright yellow petals each up to a centimeter long.

The fruit is a plump, hairy, rounded capsule containing flat orange seeds.