The Collaborative International Dictionary of English v.0.48:

Tutsan \Tut"san\, n. [F. toutesaine; tout, toute, all (L. totus)
   + sain, saine, sound, healthy, L. sanus.] (Bot.)
   A plant of the genus Hypericum (Hypericum Androsoemum),
   from which a healing ointment is prepared in Spain; -- called
   also parkleaves.
   [1913 Webster]