Charismatic Megafauna is a classification of animals that environmentalists and conservationists use to simplify a complex issue. There is a reason “save the polar bears” or “save the whales” are easier rallying cries for the public than “we need to limit CO2 emission by a certain percentage.” It is easier for the general public to see and understand a problem by describing how it impacts the large animals on our planet.
This is an odd classification because the only thing they have in common is “being big.” You wouldn’t say a lion is more closely related to an elephant than a housecat, but housecats are not in this category. What makes it odd is we classify all ‘charistmatic megaflora’ into one word: trees.