Evidently, it is a branch of transfiguration because it conjures water, but at the same time, it is also a Charm because the caster is then able to control it.
I noticed, upon viewing the picture on the Aqua Eructo spellbook page, that there's a circle on the right-hand page. I wondered whether that was the hand motion (I don't quite see what else it could be, at the moment), but I wanted to know what everyone else thought. 22.214.171.124 15:01, August 29, 2012 (UTC)
True dat. Just wondered why there was a random circle in the middle of the page. And while you're right that we can't say that, we also can't rule out the possibility that the hand is the same for both Herbivicus and Aqua Eructo; why would they make individual ones if you're just gonna press a button to cast it? :) james (talk) 15:55, August 29, 2012 (UTC)