I do not think it can be cristatella bacause the cap does not spill over and the stalk is sorediate. It seems it can only be C micilenta (http://www.discoverlife.org/20/q?search=Cladonia+macilenta) or floerkeana (http://www.discoverlife.org/mp/20q?search=Cladonia+floerkeana&guide=Lichens_USGA). What do you think about this one?
Rob Curtis
2014-05-08
2014-05-08
United States of America, Pennsylvania, Erie County, US-PA, US