Cross Bill. Sweet William.
Reading edition

Nobody but an imbecile Mistakes Sweet William for Cross Bill: And even I can scarcely claim, The skill to make them look the same. Some other shrubs and vines and trees, Express emotion much like these, You've seen the mad-wort plant I guess, And weeping willows and sigh-press, The passion-flower, at it's climax, The glad-iolus and the smile-ax.