1880 J. Britten & R. Holland Irish Daisy. Leodonton Taraxacum, L.—Yks.
1936 N. L. Britton & A. Brown (ed. 2) III. 315 Leontodon Taraxacum L. Dandelion... Called also lion's-tooth,..Irish daisy, monk's-head, priest's-crown.
2005 A. Phaneuf 92/1 It [sc. the dandelion] has also variously been called blowball, lion's tooth, Irish daisy, and wild endive. But the name I like best is fairy clock.