Physocarpus alternans also known as dwarf ninebark and Nevada ninebark is a flowering shrub native to east California, currently found throughout Western North America.

[2] Aside from the native California specimens have been collected in Nevada, Utah, Idaho and Colorado.

Physocarpus alternans grows to a height of 50 to 150 cm.

Leaves possess small, rounded teeth along the margin.

Flowers, densely hairy, form in bunches of up to around ten.