> The origin of the triffid species is never fully revealed in Wyndham's novel. The novel's central character, Bill Masen, dismisses the idea that they are a naturally occurring species, or that they are extraterrestrial in origin:
My own belief, for what that is worth, is that they were the outcome of a series of ingenious biological meddlings—and very likely accidental, at that. Had they been evolved anywhere but in the region they were, we should doubtless have had a well‑documented ancestry for them.