2 · Nature
25 · earth, world as celestial body
25G · plants; vegetation
25G4 · plants and herbs
25G4(...) · plants and herbs (with NAME)
25G4(RUE) · plants and herbs: rue
25G4(RUE)(+3) · plants and herbs: rue (+ characteristics of plant growth)
25G4(RUE)(+32) ·
plants and herbs: rue (+ flowers, blossom, blossoming)