A bigger one in the middle.

This member of the Convolvulaceae family was first described by Ker Gawl in 1818. It is from Paraguay, Uruguay and Argentina. Give it a well-drained soil, keep it moist and keep it out of the full sun. The caudex will grow to more than half a meter, the vines reach for more than 4 meters. The bell-shaped flowers are pink, and it can easy be reproduced by cuttings as well. I found mine in Amsterdam in 2001.