The Collaborative International Dictionary
Hermodactylus tuberosus
Snake's-head \Snake's"-head`\, n. (Bot.)
The Guinea-hen flower; -- so called in England because its
spotted petals resemble the scales of a snake's head.
--Dr.
Prior.
Snake's-head iris (Bot.), an iridaceous plant ( Hermodactylus tuberosus) of the Mediterranean region. The flowers slightly resemble a serpent's open mouth.