On the identification of plants: I wanted to make this post, because I feel like (hopefully) this will help some of you. Please, for the love of the gods, get yourself a wildflower field guide if you are going to be taking cuttings from spring meadows, etc and intend to eat them, or bring them into a house that has pets. Plants that are misidentified serve no use to you in spell form, and frankly, can kill you or make you violently sick if you mix up the wrong things. Take a guess at the edibility of a plant, then click the picture and read the caption. What you see might surprise you.
As random as the plants above might seem to you, they are all members of the mint family. As a result, they share certain traits , like alternating pairs of leaves, and flowers that are whorled. However, not all of these are edible, and mistaking one for another can be a bad mistake. Furthermore, knowing the common name sometimes isn't enough. Knowing that you need "nettle" isn't good enough. Do you need stinging nettle or deadnettles? One is used as a diuretic, the other is a cure for hair loss. One you can eat in a salad, the other has stinging hairs that will inject you with histamines the moment you touch them. Do you really want to make that mistake? Please, be careful
I personally recommend Newcomb's Wildflower guide for anyone on the east coast. It's relatively cheap, and might even be available at your local library, or the library of a nearby university.
edit: oops, I forgot to set my captions.