Medicinal Lichens

Lichens are a symbiosis of bacteria, fungi, yeast, and algae. They have colonized every continent on Earth, yes even the artic. (they also live on International Space Station) This book explores more than 400 lichens. It contains full-color photos. It has the science!  Learn how indigenous peoples of North America used lichens in their foods, dyes, medicines and more. If your are trying to seduce a random, inquisitive, bio nerd, this is the book to gift them.