WoW – Briarthorn?

Erm no comment but you cna find it in chests and off the odd mob, but IIRC you need herbalism to mass loot it… Westfall is good for it though – if you’re a herbalist you will find that as you’re going through the game the materials you need at your level are usually in the areas where you’re questing at your level.

If you’re stuck you could also check http://www.thottbot.com or http://wow.allakhazam.com – I prefer Thottbot myself but Alla can have stuff thott doesn’t on there.

EDIT: Printable list of herbs and areas here http://www.wowhq.com/content/herbalminingloc.htm