Children (5 direct children, 5 direct and indirect children):
Calystegia collina subsp. collina
Coast range false bindweed
Calystegia collina subsp. oxyphylla
Mount saint helena morning-glory
Calystegia collina subsp. tridactylosa
Three-fingered morning-glory
Calystegia collina subsp. venusta
South coast range morning-glory
Calystegia collina subsp. apicum