Yeah I agree it does look like the calyx, very good info on that picture you posted. A lot of people could use it. Keep it where you can get it fast for future use. That way when you see a post such as this one you could pop it right up there. Still if ever you think it could be male get it out of general population , if you have the space. Once you see a male they just have a different look to them. Good Luck to you.