There is a moment, if you grow Monstera long enough, when you stop seeing leaves and start seeing arguments. The oblong perforations of M. deliciosa make one claim about the world. The torch-shaped windows punched into a mature M. × burle-marxii make an entirely different one. Same genus, same general logic of fenestration, but separated by a gulf of form that feels almost philosophical once you have spent enough time looking.
The flame — that word appears again and again in collector shorthand, and it is genuinely apt. Monstera × burle-marxii, the natural hybrid that carries Roberto Burle Marx's name, produces fenestrations that taper at both ends, elongated and sinuous, burning upward through the lamina like something caught mid-motion. Hold a mature leaf against a south-facing window and the light comes through not in the round portals of deliciosa but in a series of narrow, pointed flames. That shape is not incidental. It is the plant's identity — a kind of visual grammar that experienced collectors can read from across a room.