Collected by Burl Mostul (#53)
in San Louis Potosi,
This member of the Convolvulaceae family was described by Jean Baptiste
Antoine Pierre de Monnet de Lamarck in 1791.
It's found from Mexico to Paraguay. Give it a well- drained soil, some
water and sun, and it will give you fine blue flowers with white throat. The bulb will grow to
centimetres in diameter, the vines to several meters.