They are from what i gathered permanent mission that are there alongside the usual event. You work much like the Mountain Lily Event were you get the Girl early and upgrade her with Skill/Dressblooms.

And here i am only dreaming of Toad Lily never got anything better than a 4 star on premium and spent so many FG its ridiculos

Gimme Anenome and I can quit the game in peace..........Otherwise, the dream is to Gotta Catch'em All!

Since I seem to get them more frequently than the others, I'll save my Gems for the Banana Girls first.