The Nantucket Biodiversity Initiative A Checklist of the Lichens on Nantucket Island. Town of Nantucket, Nantucket County, MA, USA

Report submitted in fulfillment of a 2006 Nantucket Biodiversity Initiative grant.

Collections made at 14 sites on Nantucket Island during the 2006 and 2007 NBI Weeks have added 53 species in 33 genera to the 2004 lichen list of 89 species in 37 genera.  In all 21 genera have been added to the historical list for the island, increasing the number of genera to 61 and the species list to 148 species.  Five species, Bacidia helicospora, Pyrrhospora quernea, Physcia pumilior, Cladonia abbreviatula and Usnea cornuta appear to be new records for Massachusetts. Ramalina willeyi is well established on the island as are other Ramalinas thought to be uncommon in the region, such as Usnea mutabilis, Ramalina americana and Ramalina farinacea. Skyttea radiatilis and Mycoglaena sp. (saprophytic fungi related to lichens and lichenicolous fungi) and Naetrocymbe punctiforms, a lichenicolous fungus, are reported for the island.