Petromarula pinnata

Petromarula pinnata (the name peromarula means 'rock or stone lettuce' in Greek, referring to the delicious taste of the leaves which were used in salads) is an endemic Cretan flower growing in cliffs and walls.

There are some very interesting and detailed facts about Petromarula pinnata as well as botanical drawings here if you are interested

You can click on the pictures to enlarge.