What do gigantus greenis arbora mean?

"Gigantus greenis arbora" appears to be a fictional or playful term rather than a scientifically recognized name. It combines Latin roots, where "gigantus" suggests something large or giant, "greenis" might imply green, and "arbora" refers to trees. Without specific context, it could be interpreted as a whimsical reference to large green trees or a fantastical species in a story or game.