1. An erect greyish branching lichen of Arctic and even some north temperate regions constituting the chief food for reindeer and caribou and sometimes being eaten by humans
   "The reindeer moss covered the tundra like a carpet";
   - reindeer lichen, arctic moss, Cladonia rangiferina

Derived forms: reindeer mosses, reindeer moss

Type of: lichen

Part of: Cladonia, genus Cladonia

Encyclopedia: Reindeer moss