A Wonder Flower is a flower power-up that first appeared in Super Mario Bros. Wonder.
Wiggler - Super Mario Wiki, the Mario encyclopedia
Super Mario Bros.™ Wonder for Nintendo Switch™ – Official Site
Bowser Jr. - Super Mario Wiki, the Mario encyclopedia
New Super Mario Bros. Wonder Switch
Hoppycat - Super Mario Wiki, the Mario encyclopedia
Fire Flower, SM64 Machinima Wiki
Super Mario Bros. Wonder Guide - IGN
Wario - Super Mario Wiki, the Mario encyclopedia
Flower (biological) - Super Mario Wiki, the Mario encyclopedia