From Wiktionary, the free dictionary
Ancient Greek φῠ́ω (phŭ́ō) Proto-Indo-European *-tós Ancient Greek -τός (-tós) Proto-Indo-European *leǵ- Proto-Indo-European *lóǵos
Ancient Greek λόγος (lógos) Proto-Indo-European *-éh₂ Ancient Greek -ῐ́ᾱ (-ĭ́ā) English phytology
From phyto- + -logy.
phytology (usually uncountable, plural phytologies)
- (biology) the study of plants; botany