Smooth rock tripe
- kingdom: Fungi
- phylum: Ascomycota
- class: Lecanoromycetes
- order: Umbilicariales
- family: Umbilicariaceae
- genus: Umbilicaria
- species: Umbilicaria mammulata
Shelburne
Nova ScotiaLa Tuque
Saint-Félicien
Quebec
CanadaLookout Mountain
GeorgiaConcord
Gloucester
Lanesborough
Sheffield
Stockbridge
Winchester
MassachusettsKeene
Mont Vernon
North Conway
Temple
New HampshireCinnaminson
Hopatcong
Mount Arlington
Ringwood
Riverton
Succasunna
New JerseyBalfour
Boone
Danbury
Hendersonville
North CarolinaLookout Mountain
TennesseeBrattleboro
Newfane
VermontMonterey
VirginiaSaint Croix Falls
Wisconsin
United States