Acarospora fuscata (Schrader) Arnold

Brown Cobblestone Lichen

Amandinea punctata (Hoffm.) Coppins & Scheid.

A Tiny Button Lichen

Arthonia caesia (Flotow) Körber

Frosted Comma Lichen

Aspicilia cinerea (L.) Körber

Cinder Sunken-disk Lichen

Bryoria furcellata (Fr.) Brodo & D. Hawksw.

Burred Horsehair Lichen

Caloplaca cerina (Ehrh. ex Hedwig) Th. Fr.

Gray-rimmed Firedot Lichen

Caloplaca citrina (Hoffm.) Th. Fr.

Mealy Firedot Lichen

Caloplaca ferruginea (Hudson) Th. Fr.

A Firedot Lichen

Caloplaca flavovirescens (Wulfen) Dalla Torre & Sarnth.

Sulphur Rock Firedot Lichen

Caloplaca holocarpa (Hoffm. ex Ach.) M. Wade

A Firedot Lichen

Candelaria concolor (Dickson) Stein

Lemon Candle-flame Lichen

Candelariella aurella (Hoffm.) Zahlbr.

Hidden Gold-speck Lichen

Candelariella efflorescens R. C. Harris & W. R. Buck

Powdery Gold-speck Lichen

Candelariella vitellina (Hoffm.) Müll. Arg.

Comon Gold-speck Lichen

Cetrelia chicitae (Culb.) Culb. & C. Culb.

A Sea-storm Lichen

Cladonia apodocarpa Robbins

Stalkless Cladonia

Cladonia cervicornis subsp. verticillata (Hoffm.) Ahti

Ladder Lichen

Cladonia coniocraea (Flörke) Sprengel

Common Powderhorn

Cladonia crispata (Ach.) Flotow var. crispata

Organ-pipe Lichen

Cladonia cristatella Tuck.

Common British Soldiers

Cladonia furcata (Hudson) Schrader

Many-forked Cladonia

Cladonia gracilis (L.) Willd. subsp. gracilis

Smooth Cladonia

Cladonia gracilis subsp. turbinata (Ach.) Ahti

Smooth Cladonia

Cladonia macilenta var. bacillaris (Genth) Schaerer

Lipstick Powderhorn race

Cladonia mitis Sandst.

Green Reindeer Lichen

Cladonia pyxidata (L.) Hoffm.

Pebbled Pixie-cup

Cladonia rangiferina (L.) F. H. Wigg.

Gray Reindeer Lichen

Collema subflaccidum Degel.

Tree Tar-jelly Lichen

Dibaeis baeomyces (L. f.) Rambold & Hertel

Pink Earth Lichen

Diploschistes scruposus (Schreber) Norman

Aggressive Crater Lichen

Evernia mesomorpha Nyl.

Boreal Oakmoss Lichen

Flavoparmelia caperata (L.) Hale

Common Greenshield Lichen

Graphis scripta (L.) Ach.

Common Script Lichen

Hypocenomyce scalaris (Ach.) M. Choisy

Common Clam Lichen

Hypogymnia physodes (L.) Nyl.

Hooded Tube Lichen

Julella fallaciosa (Arnold) R. C. Harris

A Julella Lichen

Lecanora dispersa (Pers. ) Sommerf.

Mortar Rim-lichen

Lecanora hybocarpa (Tuck.) Brodo

Bumpy Rim Lichen

Lecanora muralis (Schreber) Rabenh.

Stonewall Rim Lichen

Lecanora polytropa (Hoffm.) Rabenh.

Granite-speck Rim Lichen

Lecanora pulicaris (Pers.) Ach.

A Rim Lichen

Lecanora strobilina (Sprengel) Kieffer

Mealy Rim Lichen

Lecanora symmicta (Ach.) Ach.

Fused Rim Lichen

Lecanora thysanophora Harris

Mapledust Rim Lichen

Lepraria incana (L.) Ach.

A Dust Lichen

Lepraria lobificans Nyl.

Fluffy Dust Lichen

Lepraria neglecta (Nyl.) Erichsen

Zoned Dust Lichen

Melanelixia  subaurifera (Nyl.) O. Blanco et al.

Abraded Camouflage Lichen

Melanohalea halei (Ahti) O. Blanco et al.

A Camouflage Lichen

Micarea erratica (Körber) Hertel, Rambold & Pietschmann

A Dot Lichen

Mycocalicium subtile (Pers.) Szat.

A Mycocalicium Lichen

Ochrolechia arborea (Kreyer) Almb.

Powdery Saucer Lichen

Parmelia squarrosa Hale

Bottlebrush Shield Lichen

Parmelia sulcata Taylor

Hammered Shield Lichen

Peltigera lepidophora (Vainio) Bitter

Scaly Pelt Lichen

Peltigera rufescens (Weiss) Humb.

Field Lichen

Pertusaria pustulata (Ach.) Duby

A Wart Lichen

Phaeocalicium polyporaeum (Nyl.) Tibell

A Phaeocalicium Lichen

Phaeophyscia adiastola (Essl.) Essl.

Powder-tipped Shadow Lichen

Phaeophyscia pusilloides (Zahlbr.) Essl.

Pompon Shadow Lichen

Phaeophyscia rubropulchra (Degel.) Essl.

Orange-cored Shadow Lichen

Physcia adscendens (Fr.) H. Olivier

Hooded Rosette Lichen

Physcia aipolia (Ehrh. ex Humb.) Fürnr. var. aipolia

Hoary Rosette Lichen

Physcia millegrana Degel.

Mealy Rosette Lichen

Physcia stellaris (L.) Nyl.

Star Rosette Lichen

Physcia subtilis Degel.

Slender Rosette Lichen

Physconia detersa (Nyl.) Poelt

Bottlebrush Frost Lichen

Placynthiella icmalea (Ach.) Coppins & P. James

A Tar-spot Lichen

Porpidia albocaerulescens (Wulfen) Hertel & Knoph

Smoky-eyed Boulder Lichen

Porpidia crustulata (Ach.) Hertel & Knoph

Concentric Boulder Lichen

Porpidia macrocarpa (DC.) Hertel & A. J. Schwab

A Boulder Lichen

Psilolechia lucida (Ach.) M. Choisy

A Sulphur-dust Lichen

Punctelia rudecta (Ach.) Krog

Rough Speckeled Shield Lichen

Pyrrhospora varians (Ach.) R. C. Harris

A Crimson Dot Lichen

Ramalina americana Hale

Sinewed Ramalina Lichen

Rhizocarpon obscuratum (Ach.) A. Massal.

Dusky Map Lichen

Rhizocarpon rubescens Th. Fr. (fide Fryday)

A Map Lichen

Sarea resinae (Fr.) Kuntze

A Sarea Lichen

Scoliciosporum chlorococcum (Stenh.) Vezda

City Dot Lichen, Green Needle Lichen

Trapelia glebulosa (Sm.) J. R. Laundon

Pebble Lichen

Trapelia placodioides Coppins & P. James

A Trapelia Lichen

Trapeliopsis flexuosa (Fr.) Coppins & P. James

Board Lichens

Tuckermannopsis americana (Sprengel) Hale

Fringed Wrinkle-lichen

Usnea subfloridana Stirton

A Beard Lichen

Verrucaria muralis Ach.

A Speck Lichen

Verrucaria nigrescens Pers.

A Speck Lichen

Xanthomendoza fallax (Hepp) Søchting, Kärnefelt & S. Kondr.

Hooded Sunburst Lichen

Xanthomendoza hasseana (Räsänen) Søchting, Kärnefelt & S. Kondr.

Poplar Sunburst Lichen

Xanthoparmelia conspersa (Ehrh. ex Ach.) Hale

Peppered Rock-shield Lichen

Xanthoparmelia plittii (Gyelnk) Hale

Plitt's Rock-shield Lichen

Xanthoparmelia viriduloumbrina (Gyelnik) Lendemer

A Rock-shield Lichen