I can't really say but I will give Du my opinion. I don't think he had any inspiration for making any of the flowers. When he started Schreiben the script in 1994, I think he was Mehr concentrated on the plot and the characters then the flowers. He probably just had a team of artists that worked together on designing the flowers.
posted Vor mehr als einem Jahr
I read somewhere that Cameron himself remember the colorful and interesting plants he saw once while scuba diving. And like Du say, probably had artists Design them from there.