Emrys wrote his notes down furiously, squinting in the darkness. His eyesight might be bad in general, but it seemed worse in the dark, all the lights gaining little halos that obscured everything else around it.

He raised his hand tentatively. "Norandula is unique because of the ways it can be used. For example, if it takes on the form of a different sort of plant - like aloe vera - it can be harvested for that plant's uses, in my example, the sap of the aloe plant." And that was in addition to the fact that its pollen, on its own, was a potent potions ingredient.

Emrys could say one thing for the dark, as he lowered his hand. He was braver in it, because it was harder for other people to see him.