Definition of phytograph in English:

phytograph

Pronunciation /ˈfʌɪtə(ʊ)ɡrɑːf/ /ˈfʌɪtə(ʊ)ɡraf/

noun

Ecology
  • A diagram showing several quantifiable criteria of the ecological status of a plant species within an association, especially in forest or woodland.

Origin

1920s (in an earlier sense). From phyto- + -graph.