All throughout December, we will be examining comic book stories and ideas that were not only abandoned, but also had the stories/plots specifically "overturned" by a later writer (as if they were a legal precedent). Click here for an archive of all the previous editions of The Abandoned An' Forsaked.
Today we look at the original origin for Poison Ivy, as suggested by commenter Mr. Mxyzptlk 52!
Poison Ivy has a familiar origin these days - Pamela Isley, worked with Jason Woodrue, the future Florenic Man, before she became, well, Poison Ivy.
However, that was not her original origin! Gerry Conway gave her her first origin in the pages of World's Finest Comics #252 (in a Wonder Woman back-up story, of all places)...
That origin (including Lillian Rose for a name - which itself contradicted earlier stories that had Pamela Isley as her real name) stood for nearly a decade until Neil Gaiman came up with a better origin - one that tied her in with the Florenic Man (and eventually also Alec Holland).
So in Secret Origins #36, watch Gaiman eliminate the old origin...
And it is has been Woodrue in her origin ever since! Gaiman alluded to this new origin in Black Orchid before going into greater detail in the Secret Origins issue.