Source : Webster's Revised Unabridged Dictionary (1913)

Tidytips \Ti"dy*tips`\, n. (Bot.)
   A California composite plant ({Layia platyglossa}), the
   flower of which has yellow rays tipped with white.

Source : WordNet®

tidytips
     n : California annual having flower heads with yellow rays
         tipped with white [syn: {tidy tips}, {Layia platyglossa}]