Derwyn's Herbalist and Alchemy Compendium by A D Verrier

Derwyn’s Herbalist and Alchemy Compendium is a companion book for all D20 adventurers. Compatible and designed around Pathfinder and Dungeons and Dragons role playing games, this compendium adds and introduces the mysteries of nature to the game. With over 200 plants and fungi included in this compendium, no adventurer should leave home without it…as it may save your life when you run out of potions.