British soldier lichen,
A lichen is a composite organism. As all lichens, this brightly colored fruticose lichen bears the name of the fungus, Cladonia cristatella. The alga is Trebouxia erici.
decaying wood, soil, mossy logs, and tree stumps
cladonia = branch (describes characteristic habit of growth) + crista = crest
Lichens are Fungi!
Historical description: Periods of lichen classification, General Lichenology, Albert Schneider, M.S., M.D. 1897, pp. 24-30.
virtual herbarium sheet 000007 created by Lisa K. SchlaG, 29.iii.2014