Cresta de Gallo - mystery plant

This is in my Spanish neighbour, Mathilde's garden.   She calls it Cresta de Gallo - Coxcomb - but in my Mediterranean Garden Plants book (which comes in Latin, English and Spanish), the Cresta de Gallos is a tree with a very different blossom.    I saw this plant first in Portugal about 10 years ago.   It's very distinctive because of the texture of the flower:  solid and like hard velvet.  It's a deep magenta and very striking but it's Latin or English name is a mystery.  

Erethrina Christa-Galli, the Coral Tree or Cresta de Gallo in my book has a flame red flower, as shown above.....very beautiful.