1. an earthstar with a bluish spore sac and a purplish brown gleba; at maturity the outer layer splits into rays that bend backward and elevate the spore sac;
WordNet (r) 3.0 (2006):
Geastrum coronatum
n 1: an earthstar with a bluish spore sac and a purplish brown
gleba; at maturity the outer layer splits into rays that
bend backward and elevate the spore sac