Source : Webster's Revised Unabridged Dictionary (1913)

Phytology \Phy*tol"o*gy\, n. [Phyto- + -logy: cf. F.
   phytologie.]
   The science of plants; a description of the kinds and
   properties of plants; botany. --Sir T. Browne.

Source : WordNet®

phytology
     n : the branch of biology that studies plants [syn: {botany}]