It's a nice story! Sorry it works only for Italians!
A young pupil named Matteo, attending the primary school of Copparo faced with a task assigned by the teacher on adjectives! He wrote that a flower was " petaloso " . The teacher decided to send the new word at the Accademia della Crusca for evaluation. And the Accademia said YES, PETALOSO is a well-formed-word and could be used in Italian! There are other Italian words formed in the same way: for example "peloso" (pelo+oso), "coraggioso" (coraggio +oso).
I love PETALOSO. And do not forget the #petaloso