"reindeer moss." YourDictionary, n.d. Web. 21 September 2018. <http://www.yourdictionary.com/reindeer-moss>.
reindeer moss. (n.d.). Retrieved September 21st, 2018, from http://www.yourdictionary.com/reindeer-moss
Any of several erect, grayish, branching lichens of the genus Cladonia of Arctic and boreal regions, especially C. rangiferina, constituting the chief source of food for reindeer. Also called reindeer lichen .