Mysterious Plant from Outer Space (RFP on Communal Garden Journal)

Ralph’s comment:

I like that idea.

I’d like to have a communal type of garden journal as an experiment, too, with people from different places commenting on something each day. For example, today I saw a new plant I’ve never seen before.
It looked like it maybe had the consistency of mushroom, but was red with some yellow toward the head.
I have NO IDEA what this is. It looks like it could be evil, especially since I think it was born with some poo on its head. I don’t know whose poo it was.
Pics to come.

QUESTION: what’s the best way to identify a plant of unknown origin (short of tasting it, which I’m not inclined – particularly on this one).