Calystegia subacaulis is a species of morning glory known by the common name hillside false bindweed.

Calystegia subacaulis is a hairy perennial herb growing from a woody caudex or a rhizome and extending stems no longer than about 20 centimeters.

The leaves are 3 or 4 centimeters long and triangular or arrowhead shaped with small side lobes.

The inflorescence produces morning glory flowers atop short peduncles.

Each flower is 3 to 6 centimeters wide and white or cream in color, often tinted with light purple.