"Dianthus caryophyllus", commonly known as the carnation or clove pink, is a species of Dianthus. It is probably native to the Mediterranean region but its exact range is unknown due to extensive cultivation for the last 2,000 years.

Carnations were mentioned in Greek literature 2,000 years ago. The name "carnation" is believed to come from the Latin "corona-ae", a "wreath, garland, chaplet, crown", as it was one of the flowers used in Greek and Roman ceremonial crowns, or possibly from the Latin "caro", "flesh", which refers to the natural colour of the flower, or in Christian iconography "incarnatio", "incarnation", God made flesh in the form of Jesus.

The legend that explains the name is that Diana the Goddess came upon the shepherd boy and took a liking to him. But the boy, for some reason, turned her down. Diana ripped out his eyes and threw them to the ground where they sprouted into the dianthus flower.

More Info: en.wikipedia.org