in the library

Neville is studying alone in the library one night when he slips into the Restricted Section and stumbles upon an old tome on the magical properties of certain plants, seeds, herbs, and fungi.

The book is hard to decipher, but it has potions and spells that could be made with plants that do things that were unheard of to Neville. He comes across one particular plant that he knows is in the woods around Hogwarts if one knows where to look, and this plant can help him create a very powerful spell to assist him in his... more prurient interests