GREETING CARDS - FLOWERS & TREES AD101 AD110 AD130 AD132 AD133 AD140 AD143 AD144 AD146 AD111 AD113 AD141 AD143 - Thistle I love the colour of this thistle – known as milk-thistle, or ‘Mary’s Thistle’, it is so-called because its leaves are a mottled green and white, resembling spilt milk, as according to legend the Virgin Mary was amongst milk-thistles whilst feeding the baby Jesus. The root is used in herbal medicine to improve liver function and to protect the liver.