| Cracked Lichen | Acarospora | fuscata | | 4 | Acarosporaceae | Acarosporales | Lecanoromycetes | Fungi |
| Common Coal-dust Lichen | Acarospora | privigna | | 4 | Acarosporaceae | Acarosporales | Lecanoromycetes | Fungi |
| Schleicher's Cracked Lichen | Acarospora | schleicheri | | 3 | Acarosporaceae | Acarosporales | Lecanoromycetes | Fungi |
| Big-disk Grain-Spore | Sarcogyne | clavus | | 1 | Acarosporaceae | Acarosporales | Lecanoromycetes | Fungi |
| Frosted Grain-spored Lichen | Sarcogyne | regularis | | 2 | Acarosporaceae | Acarosporales | Lecanoromycetes | Fungi |
| No Common Name | Amandinea | milliaria | | 1 | Caliciaceae | Caliciales | Lecanoromycetes | Fungi |
| Tiny Many-spored Buttons | Amandinea | polyspora | | 3 | Caliciaceae | Caliciales | Lecanoromycetes | Fungi |
| Tiny Button Lichen | Amandinea | punctata | | 8 | Caliciaceae | Caliciales | Lecanoromycetes | Fungi |
| Curtis's Buttons | Baculifera | curtisii | | 5 | Caliciaceae | Caliciales | Lecanoromycetes | Fungi |
| Parasitic Button Lichen | Buellia | badia | | 2 | Caliciaceae | Caliciales | Lecanoromycetes | Fungi |
| No Common Name | Buellia | dialyta | | 1 | Caliciaceae | Caliciales | Lecanoromycetes | Fungi |
| Boreal Button Lichen | Buellia | disciformis | | 2 | Caliciaceae | Caliciales | Lecanoromycetes | Fungi |
| No Common Name | Buellia | maculata | | 5 | Caliciaceae | Caliciales | Lecanoromycetes | Fungi |
| Sunken Button Lichen | Buellia | spuria | | 12 | Caliciaceae | Caliciales | Lecanoromycetes | Fungi |
| Stilling's Disc Lichen | Buellia | stillingiana | | 27 | Caliciaceae | Caliciales | Lecanoromycetes | Fungi |
| No Common Name | Buellia | vernicoma | | 1 | Caliciaceae | Caliciales | Lecanoromycetes | Fungi |
| No Common Name | Calicium | salicinum | | 1 | Caliciaceae | Caliciales | Lecanoromycetes | Fungi |
| Yellow Soot Lichen | Calicium | tigillare | | 2 | Caliciaceae | Caliciales | Lecanoromycetes | Fungi |
| Golden Moonglow Lichen | Dimelaena | oreina | | 11 | Caliciaceae | Caliciales | Lecanoromycetes | Fungi |
| No Common Name | Diplotomma | alboatrum | | 1 | Caliciaceae | Caliciales | Lecanoromycetes | Fungi |
| Frost's Dirinaria Lichen | Dirinaria | frostii | | 2 | Caliciaceae | Caliciales | Lecanoromycetes | Fungi |
| Dactylose Mustard-Rosette | Pyxine | caesiopruinosa | | 4 | Caliciaceae | Caliciales | Lecanoromycetes | Fungi |
| Mustard Lichen | Pyxine | sorediata | | 23 | Caliciaceae | Caliciales | Lecanoromycetes | Fungi |
| Mustard Lichen | Pyxine | subcinerea | | 47 | Caliciaceae | Caliciales | Lecanoromycetes | Fungi |
| Shaggy-fringe Lichen | Anaptychia | palmulata | | 21 | Physciaceae | Caliciales | Lecanoromycetes | Fungi |
| White Fringe Lichen | Heterodermia | albicans | | 2 | Physciaceae | Caliciales | Lecanoromycetes | Fungi |
| Appalachian Fringe Lichen | Heterodermia | appalachensis | | 1 | Physciaceae | Caliciales | Lecanoromycetes | Fungi |
| No Common Name | Heterodermia | granulifera | | 3 | Physciaceae | Caliciales | Lecanoromycetes | Fungi |
| Cupped Fringe Lichen | Heterodermia | hypoleuca | | 2 | Physciaceae | Caliciales | Lecanoromycetes | Fungi |
| Disregarded Fringe | Heterodermia | neglecta | | 1 | Physciaceae | Caliciales | Lecanoromycetes | Fungi |
| Obscure Shield Lichen | Heterodermia | obscurata | | 9 | Physciaceae | Caliciales | Lecanoromycetes | Fungi |
| Powdered Fringe Lichen | Heterodermia | speciosa | | 14 | Physciaceae | Caliciales | Lecanoromycetes | Fungi |
| Grainy Shadow-crust Lichen | Hyperphyscia | adglutinata | | 0 | Physciaceae | Caliciales | Lecanoromycetes | Fungi |
| Smooth Shadow-crust Lichen | Hyperphyscia | syncolla | | 1 | Physciaceae | Caliciales | Lecanoromycetes | Fungi |
| No Common Name | Mischoblastia | vezdae | | 1 | Physciaceae | Caliciales | Lecanoromycetes | Fungi |
| Cernohorskyi's Wreath Lichen | Phaeophyscia | cernohorskyi | | 0 | Physciaceae | Caliciales | Lecanoromycetes | Fungi |
| Ciliate Wreath Lichen | Phaeophyscia | ciliata | | 8 | Physciaceae | Caliciales | Lecanoromycetes | Fungi |
| Hairy Shadow Lichen | Phaeophyscia | hirsuta | | 0 | Physciaceae | Caliciales | Lecanoromycetes | Fungi |
| Hairy Shadow Lichen | Phaeophyscia | hirtella | | 2 | Physciaceae | Caliciales | Lecanoromycetes | Fungi |
| Hispid Wreath Lichen | Phaeophyscia | hispidula | | 0 | Physciaceae | Caliciales | Lecanoromycetes | Fungi |
| Powder-tipped Shadow Lichen | Phaeophyscia | orbicularis | | 10 | Physciaceae | Caliciales | Lecanoromycetes | Fungi |
| Pompon Shadow Lichen | Phaeophyscia | pusilloides | | 6 | Physciaceae | Caliciales | Lecanoromycetes | Fungi |
| Orange-cored Shadow Lichen | Phaeophyscia | rubropulchra | | 71 | Physciaceae | Caliciales | Lecanoromycetes | Fungi |
| Hooded Rosette Lichen | Physcia | adscendens | | 4 | Physciaceae | Caliciales | Lecanoromycetes | Fungi |
| Hoary Rosette Lichen | Physcia | aipolia | | 21 | Physciaceae | Caliciales | Lecanoromycetes | Fungi |
| American Rosette Lichen | Physcia | americana | | 18 | Physciaceae | Caliciales | Lecanoromycetes | Fungi |
| Blue-gray Rosette Lichen | Physcia | caesia | | 1 | Physciaceae | Caliciales | Lecanoromycetes | Fungi |
| Mealy Rosette Lichen | Physcia | millegrana | | 42 | Physciaceae | Caliciales | Lecanoromycetes | Fungi |
| Black-eyed Rosette Lichen | Physcia | phaea | | 2 | Physciaceae | Caliciales | Lecanoromycetes | Fungi |
| No Common Name | Physcia | pseudospeciosa | | 3 | Physciaceae | Caliciales | Lecanoromycetes | Fungi |
| Spotted Rosette Lichen | Physcia | pumilior | | 2 | Physciaceae | Caliciales | Lecanoromycetes | Fungi |
| Starry Rosette Lichen | Physcia | stellaris | | 29 | Physciaceae | Caliciales | Lecanoromycetes | Fungi |
| Slender Rosette Lichen | Physcia | subtilis | | 8 | Physciaceae | Caliciales | Lecanoromycetes | Fungi |
| Thomson's Rosette Lichen | Physcia | thomsoniana | | 1 | Physciaceae | Caliciales | Lecanoromycetes | Fungi |
| Cryptic Rosette Lichen | Physciella | chloantha | | 4 | Physciaceae | Caliciales | Lecanoromycetes | Fungi |
| Bottlebrush Frost Lichen | Physconia | detersa | | 6 | Physciaceae | Caliciales | Lecanoromycetes | Fungi |
| Grey Frost Lichen | Physconia | grisea | | 6 | Physciaceae | Caliciales | Lecanoromycetes | Fungi |
| Bottle-brush Frost Lichen | Physconia | leucoleiptes | | 1 | Physciaceae | Caliciales | Lecanoromycetes | Fungi |
| Scaly Pepper-spore Lichen | Rinodina | ascociscana | | 0 | Physciaceae | Caliciales | Lecanoromycetes | Fungi |
| No Common Name | Rinodina | bullata | | 1 | Physciaceae | Caliciales | Lecanoromycetes | Fungi |
| Greenish-brown Pepper-spore Lichen | Rinodina | efflorescens | | 1 | Physciaceae | Caliciales | Lecanoromycetes | Fungi |
| No Common Name | Rinodina | excrescens | | 1 | Physciaceae | Caliciales | Lecanoromycetes | Fungi |
| No Common Name | Rinodina | exigua | | 0 | Physciaceae | Caliciales | Lecanoromycetes | Fungi |
| Dusky Pepper-Spore | Rinodina | maculans | | 0 | Physciaceae | Caliciales | Lecanoromycetes | Fungi |
| No Common Name | Rinodina | ochracea | | 0 | Physciaceae | Caliciales | Lecanoromycetes | Fungi |
| Pale Pepper-Spore | Rinodina | oxydata | | 0 | Physciaceae | Caliciales | Lecanoromycetes | Fungi |
| Papillate Rinodina Lichen | Rinodina | papillata | | 0 | Physciaceae | Caliciales | Lecanoromycetes | Fungi |
| No Common Name | Rinodina | subminuta | | 0 | Physciaceae | Caliciales | Lecanoromycetes | Fungi |
| Candleflame Lichen | Candelaria | concolor | | 89 | Candelariaceae | Candelariales | Lecanoromycetes | Fungi |
| Powdery Goldspeck Lichen | Candelariella | efflorescens | | 31 | Candelariaceae | Candelariales | Lecanoromycetes | Fungi |
| No Common Name | Candelariella | reflexa | | 1 | Candelariaceae | Candelariales | Lecanoromycetes | Fungi |
| Egg-yolk Lichen | Candelariella | vitellina | | 20 | Candelariaceae | Candelariales | Lecanoromycetes | Fungi |
| No Common Name | Hymenelia | epulotica | | 0 | Hymeneliaceae | Hymeneliales | Lecanoromycetes | Fungi |
| No Common Name | Catillaria | chalybeia | | 1 | Catillariaceae | Lecanorales | Lecanoromycetes | Fungi |
| Stalkless Cladonia | Cladonia | apodocarpa | | 62 | Cladoniaceae | Lecanorales | Lecanoromycetes | Fungi |
| Reindeer Lichen | Cladonia | arbuscula | | 13 | Cladoniaceae | Lecanorales | Lecanoromycetes | Fungi |
| Atlantic Cup Lichen | Cladonia | atlantica | | 29 | Cladoniaceae | Lecanorales | Lecanoromycetes | Fungi |
| Beaumont's Cup Lichen | Cladonia | beaumontii | | 2 | Cladoniaceae | Lecanorales | Lecanoromycetes | Fungi |
| Bory's Cup Lichen | Cladonia | boryi | | 0 | Cladoniaceae | Lecanorales | Lecanoromycetes | Fungi |
| Stubby-stalked Cladonia | Cladonia | caespiticia | | 11 | Cladoniaceae | Lecanorales | Lecanoromycetes | Fungi |
| Split-peg Lichen | Cladonia | cariosa | | 5 | Cladoniaceae | Lecanorales | Lecanoromycetes | Fungi |
| Crowned Pixie-Cup | Cladonia | carneola | | 1 | Cladoniaceae | Lecanorales | Lecanoromycetes | Fungi |
| Carolina Cup Lichen | Cladonia | caroliniana | | 116 | Cladoniaceae | Lecanorales | Lecanoromycetes | Fungi |
| Mealy Pixie-Cup | Cladonia | chlorophaea | | 37 | Cladoniaceae | Lecanorales | Lecanoromycetes | Fungi |
| Common Powderhorn | Cladonia | coniocraea | | 151 | Cladoniaceae | Lecanorales | Lecanoromycetes | Fungi |
| Organ-pipe Lichen | Cladonia | crispata | | 1 | Cladoniaceae | Lecanorales | Lecanoromycetes | Fungi |
| British Soldiers | Cladonia | cristatella | | 293 | Cladoniaceae | Lecanorales | Lecanoromycetes | Fungi |
| Southern Soldiers | Cladonia | didyma | | 28 | Cladoniaceae | Lecanorales | Lecanoromycetes | Fungi |
| Prostrate Thorn Lichen | Cladonia | dimorphoclada | | 4 | Cladoniaceae | Lecanorales | Lecanoromycetes | Fungi |
| Trumpet Lichen | Cladonia | fimbriata | | 21 | Cladoniaceae | Lecanorales | Lecanoromycetes | Fungi |
| Florke's Cup Lichen | Cladonia | floerkeana | | 5 | Cladoniaceae | Lecanorales | Lecanoromycetes | Fungi |
| Many-forked Cladonia | Cladonia | furcata | | 115 | Cladoniaceae | Lecanorales | Lecanoromycetes | Fungi |
| Smooth Cladonia | Cladonia | gracilis | | 6 | Cladoniaceae | Lecanorales | Lecanoromycetes | Fungi |
| Gray's Cup Lichen | Cladonia | grayi | | 334 | Cladoniaceae | Lecanorales | Lecanoromycetes | Fungi |
| Powder-foot British Soldiers | Cladonia | incrassata | | 7 | Cladoniaceae | Lecanorales | Lecanoromycetes | Fungi |
| Lipstick Powderhorn | Cladonia | macilenta | | 48 | Cladoniaceae | Lecanorales | Lecanoromycetes | Fungi |
| Lipstick Powderhorn (var. bacillaris) | Cladonia | macilenta var. bacillaris | | 5 | Cladoniaceae | Lecanorales | Lecanoromycetes | Fungi |
| Mixed-up Pixie-Cup | Cladonia | mateocyatha | | 12 | Cladoniaceae | Lecanorales | Lecanoromycetes | Fungi |
| Green Reindeer Lichen | Cladonia | mitis | | 1 | Cladoniaceae | Lecanorales | Lecanoromycetes | Fungi |
| Sieve Lichen | Cladonia | multiformis | | 3 | Cladoniaceae | Lecanorales | Lecanoromycetes | Fungi |
| Smooth-footed Powderhorn | Cladonia | ochrochlora | | 18 | Cladoniaceae | Lecanorales | Lecanoromycetes | Fungi |
| Parasite Cup Lichen | Cladonia | parasitica | | 29 | Cladoniaceae | Lecanorales | Lecanoromycetes | Fungi |
| Turban Lichen | Cladonia | peziziformis | | 147 | Cladoniaceae | Lecanorales | Lecanoromycetes | Fungi |
| Piedmont Cup Lichen | Cladonia | piedmontensis | | 32 | Cladoniaceae | Lecanorales | Lecanoromycetes | Fungi |
| Red-fruited Pixie-Cup | Cladonia | pleurota | | 49 | Cladoniaceae | Lecanorales | Lecanoromycetes | Fungi |
| No Common Name | Cladonia | polycarpia | | 1 | Cladoniaceae | Lecanorales | Lecanoromycetes | Fungi |
| Thatched Peg Lichen | Cladonia | polycarpoides | | 44 | Cladoniaceae | Lecanorales | Lecanoromycetes | Fungi |
| Pebbled Pixie-Cup | Cladonia | pyxidata | | 23 | Cladoniaceae | Lecanorales | Lecanoromycetes | Fungi |
| Bran Lichen | Cladonia | ramulosa | | 8 | Cladoniaceae | Lecanorales | Lecanoromycetes | Fungi |
| Gray Reindeer Lichen | Cladonia | rangiferina | | 35 | Cladoniaceae | Lecanorales | Lecanoromycetes | Fungi |
| Rapp's Cup Lichen | Cladonia | rappii | | 7 | Cladoniaceae | Lecanorales | Lecanoromycetes | Fungi |
| Ravenel's Cup Lichen | Cladonia | ravenelii | | 0 | Cladoniaceae | Lecanorales | Lecanoromycetes | Fungi |
| Wand Lichen | Cladonia | rei | | 10 | Cladoniaceae | Lecanorales | Lecanoromycetes | Fungi |
| No Common Name | Cladonia | santensis | | 1 | Cladoniaceae | Lecanorales | Lecanoromycetes | Fungi |
| Dragon Cladonia | Cladonia | squamosa | | 190 | Cladoniaceae | Lecanorales | Lecanoromycetes | Fungi |
| Star-tipped Reindeer Lichen | Cladonia | stellaris | | 9 | Cladoniaceae | Lecanorales | Lecanoromycetes | Fungi |
| Olive Cladonia | Cladonia | strepsilis | | 96 | Cladoniaceae | Lecanorales | Lecanoromycetes | Fungi |
| Peg Lichen | Cladonia | subcariosa | | 67 | Cladoniaceae | Lecanorales | Lecanoromycetes | Fungi |
| Powdery Peg Lichen | Cladonia | subradiata | | 1 | Cladoniaceae | Lecanorales | Lecanoromycetes | Fungi |
| Dixie Reindeer Lichen | Cladonia | subtenuis | | 376 | Cladoniaceae | Lecanorales | Lecanoromycetes | Fungi |
| Turgid Cup Lichen | Cladonia | turgida | | 4 | Cladoniaceae | Lecanorales | Lecanoromycetes | Fungi |
| Thorn Cladonia | Cladonia | uncialis | | 39 | Cladoniaceae | Lecanorales | Lecanoromycetes | Fungi |
| Ladder Lichen | Cladonia | verticillata | | 22 | Cladoniaceae | Lecanorales | Lecanoromycetes | Fungi |
| Nipple Lichen | Pycnothelia | papillaria | | 130 | Cladoniaceae | Lecanorales | Lecanoromycetes | Fungi |
| No Common Name | Lecanora | albella | | 2 | Lecanoraceae | Lecanorales | Lecanoromycetes | Fungi |
| Brown-eyed Rim-Lichen | Lecanora | allophana | | 11 | Lecanoraceae | Lecanorales | Lecanoromycetes | Fungi |
| No Common Name | Lecanora | cadubriae | | 0 | Lecanoraceae | Lecanorales | Lecanoromycetes | Fungi |
| Frosted Rim-Lichen | Lecanora | caesiorubella | | 5 | Lecanoraceae | Lecanorales | Lecanoromycetes | Fungi |
| No Common Name | Lecanora | campestris | | 1 | Lecanoraceae | Lecanorales | Lecanoromycetes | Fungi |
| Dusted White-Rim | Lecanora | chlarotera | | 2 | Lecanoraceae | Lecanorales | Lecanoromycetes | Fungi |
| Beaded Rim-Lichen | Lecanora | cinereofusca | | 6 | Lecanoraceae | Lecanorales | Lecanoromycetes | Fungi |
| No Common Name | Lecanora | expallens | | 5 | Lecanoraceae | Lecanorales | Lecanoromycetes | Fungi |
| Bumpy Rim-Lichen | Lecanora | hybocarpa | | 13 | Lecanoraceae | Lecanorales | Lecanoromycetes | Fungi |
| Imshaug's Rim-Lichen | Lecanora | imshaugii | | 0 | Lecanoraceae | Lecanorales | Lecanoromycetes | Fungi |
| No Common Name | Lecanora | minutella | | 2 | Lecanoraceae | Lecanorales | Lecanoromycetes | Fungi |
| Granite-speck Rim-Lichen | Lecanora | polytropa | | 0 | Lecanoraceae | Lecanorales | Lecanoromycetes | Fungi |
| Pink-eyed White-Rim | Lecanora | protervula | | 11 | Lecanoraceae | Lecanorales | Lecanoromycetes | Fungi |
| Common Rim Lichen | Lecanora | pulicaris | | 2 | Lecanoraceae | Lecanorales | Lecanoromycetes | Fungi |
| Mealy Rim-Lichen | Lecanora | strobilina | | 28 | Lecanoraceae | Lecanorales | Lecanoromycetes | Fungi |
| Fused Rim Lichen | Lecanora | symmicta | | 2 | Lecanoraceae | Lecanorales | Lecanoromycetes | Fungi |
| Mapledust Lichen | Lecanora | thysanophora | | 10 | Lecanoraceae | Lecanorales | Lecanoromycetes | Fungi |
| Driftwood Rim-Lichen | Lecanora | xylophila | | 1 | Lecanoraceae | Lecanorales | Lecanoromycetes | Fungi |
| No Common Name | Lecidella | carpathica | | 1 | Lecanoraceae | Lecanorales | Lecanoromycetes | Fungi |
| Disk Lichen | Lecidella | stigmatea | | 7 | Lecanoraceae | Lecanorales | Lecanoromycetes | Fungi |
| Mortar Rim-Lichen | Myriolecis | dispersa | | 6 | Lecanoraceae | Lecanorales | Lecanoromycetes | Fungi |
| Hagen's Rim-Lichen | Myriolecis | hagenii | | 5 | Lecanoraceae | Lecanorales | Lecanoromycetes | Fungi |
| Stonewall Rim-Lichen | Protoparmeliopsis | muralis | | 5 | Lecanoraceae | Lecanorales | Lecanoromycetes | Fungi |
| Golden Rimmed Navel Lichen | Rhizoplaca | chrysoleuca | | 3 | Lecanoraceae | Lecanorales | Lecanoromycetes | Fungi |
| Variable Brown Dotlets | Xanthosyne | varians | | 7 | Lecanoraceae | Lecanorales | Lecanoromycetes | Fungi |
| Eastern Candlewax Lichen | Ahtiana | aurescens | | 1 | Parmeliaceae | Lecanorales | Lecanoromycetes | Fungi |
| American Anzia Lichen | Anzia | americana | | 1 | Parmeliaceae | Lecanorales | Lecanoromycetes | Fungi |
| Black-foam Lichen | Anzia | colpodes | | 3 | Parmeliaceae | Lecanorales | Lecanoromycetes | Fungi |
| No Common Name | Anzia | ornata | | 1 | Parmeliaceae | Lecanorales | Lecanoromycetes | Fungi |
| Burred Horsehair Lichen | Bryoria | furcellata | | 3 | Parmeliaceae | Lecanorales | Lecanoromycetes | Fungi |
| Carolina Shield Lichen | Canoparmelia | caroliniana | | 5 | Parmeliaceae | Lecanorales | Lecanoromycetes | Fungi |
| Texas Shield Lichen | Canoparmelia | texana | | 3 | Parmeliaceae | Lecanorales | Lecanoromycetes | Fungi |
| Sand-loving Iceland Lichen | Cetraria | arenaria | | 17 | Parmeliaceae | Lecanorales | Lecanoromycetes | Fungi |
| Sandwort Cetraria Lichen | Cetraria | islandica | | 2 | Parmeliaceae | Lecanorales | Lecanoromycetes | Fungi |
| Sea-storm Lichen | Cetrelia | cetrarioides | | 1 | Parmeliaceae | Lecanorales | Lecanoromycetes | Fungi |
| Chicita's Giant Shield Lichen | Cetrelia | chicitae | | 10 | Parmeliaceae | Lecanorales | Lecanoromycetes | Fungi |
| Sea-storm Lichen | Cetrelia | olivetorum | | 7 | Parmeliaceae | Lecanorales | Lecanoromycetes | Fungi |
| Reticulate Shield | Crespoa | crozalsiana | | 4 | Parmeliaceae | Lecanorales | Lecanoromycetes | Fungi |
| Rock Greenshield | Flavoparmelia | baltimorensis | | 69 | Parmeliaceae | Lecanorales | Lecanoromycetes | Fungi |
| Common Greenshield | Flavoparmelia | caperata | | 620 | Parmeliaceae | Lecanorales | Lecanoromycetes | Fungi |
| Speckled Greenshield | Flavopunctelia | flaventior | | 8 | Parmeliaceae | Lecanorales | Lecanoromycetes | Fungi |
| Powder-edged Speckled Greenshield | Flavopunctelia | soredica | | 2 | Parmeliaceae | Lecanorales | Lecanoromycetes | Fungi |
| Kroge's Tube Lichen | Hypogymnia | krogiae | | 1 | Parmeliaceae | Lecanorales | Lecanoromycetes | Fungi |
| Monk's Hood Lichen | Hypogymnia | physodes | | 9 | Parmeliaceae | Lecanorales | Lecanoromycetes | Fungi |
| Hairy-spined Shield Lichen | Hypotrachyna | horrescens | | 8 | Parmeliaceae | Lecanorales | Lecanoromycetes | Fungi |
| Wrinkled Loop Lichen | Hypotrachyna | livida | | 24 | Parmeliaceae | Lecanorales | Lecanoromycetes | Fungi |
| Hairless-spined Shield Lichen | Hypotrachyna | minarum | | 8 | Parmeliaceae | Lecanorales | Lecanoromycetes | Fungi |
| Grainy Loop Lichen | Hypotrachyna | osseoalba | | 2 | Parmeliaceae | Lecanorales | Lecanoromycetes | Fungi |
| Salted Starburst Lichen | Imshaugia | aleurites | | 16 | Parmeliaceae | Lecanorales | Lecanoromycetes | Fungi |
| American Starburst Lichen | Imshaugia | placorodia | | 21 | Parmeliaceae | Lecanorales | Lecanoromycetes | Fungi |
| Appalachian Camouflage Lichen | Melanelia | culbersonii | | 2 | Parmeliaceae | Lecanorales | Lecanoromycetes | Fungi |
| Abraded Camouflage Lichen | Melanelixia | subaurifera | | 5 | Parmeliaceae | Lecanorales | Lecanoromycetes | Fungi |
| Lustrous Camouflage Lichen | Melanohalea | exasperata | | 1 | Parmeliaceae | Lecanorales | Lecanoromycetes | Fungi |
| Appalachian Tree Brown-Shield | Melanohalea | halei | | 1 | Parmeliaceae | Lecanorales | Lecanoromycetes | Fungi |
| Powdery Axil-bristle Lichen | Myelochroa | aurulenta | | 74 | Parmeliaceae | Lecanorales | Lecanoromycetes | Fungi |
| Smooth Axil-bristle Lichen | Myelochroa | galbina | | 3 | Parmeliaceae | Lecanorales | Lecanoromycetes | Fungi |
| No Common Name | Myelochroa | metarevoluta | | 1 | Parmeliaceae | Lecanorales | Lecanoromycetes | Fungi |
| Rock Axil-bristle Lichen | Myelochroa | obsessa | | 5 | Parmeliaceae | Lecanorales | Lecanoromycetes | Fungi |
| Salted Shield Lichen | Parmelia | saxatilis | | 5 | Parmeliaceae | Lecanorales | Lecanoromycetes | Fungi |
| Bottlebrush Shield Lichen | Parmelia | squarrosa | | 14 | Parmeliaceae | Lecanorales | Lecanoromycetes | Fungi |
| Hammered Shield Lichen | Parmelia | sulcata | | 18 | Parmeliaceae | Lecanorales | Lecanoromycetes | Fungi |
| Ambiguous Bran Lichen | Parmeliopsis | ambigua | | 2 | Parmeliaceae | Lecanorales | Lecanoromycetes | Fungi |
| Gray Starburst Lichen | Parmeliopsis | hyperopta | | 1 | Parmeliaceae | Lecanorales | Lecanoromycetes | Fungi |
| Southern Starburst Lichen | Parmeliopsis | subambigua | | 3 | Parmeliaceae | Lecanorales | Lecanoromycetes | Fungi |
| No Common Name | Parmotrema | cetratum | | 1 | Parmeliaceae | Lecanorales | Lecanoromycetes | Fungi |
| Salted Ruffle Lichen | Parmotrema | crinitum | | 7 | Parmeliaceae | Lecanorales | Lecanoromycetes | Fungi |
| Cracked Ruffle Lichen | Parmotrema | dilatatum | | 3 | Parmeliaceae | Lecanorales | Lecanoromycetes | Fungi |
| No Common Name | Parmotrema | eurysacum | | 2 | Parmeliaceae | Lecanorales | Lecanoromycetes | Fungi |
| No Common Name | Parmotrema | gardneri | | 0 | Parmeliaceae | Lecanorales | Lecanoromycetes | Fungi |
| Southern Powdered Ruffle Lichen (hypoleucinum) | Parmotrema | hypoleucinum | | 4 | Parmeliaceae | Lecanorales | Lecanoromycetes | Fungi |
| Southern Powdered Ruffle Lichen (hypotropum) | Parmotrema | hypotropum | | 74 | Parmeliaceae | Lecanorales | Lecanoromycetes | Fungi |
| Margarite Parmotrema Lichen | Parmotrema | margaritatum | | 2 | Parmeliaceae | Lecanorales | Lecanoromycetes | Fungi |
| Perforated Parmotrema Lichen | Parmotrema | perforatum | | 23 | Parmeliaceae | Lecanorales | Lecanoromycetes | Fungi |
| Powdered Ruffle Lichen | Parmotrema | perlatum | | 19 | Parmeliaceae | Lecanorales | Lecanoromycetes | Fungi |
| Cracked Ruffle Lichen | Parmotrema | reticulatum | | 9 | Parmeliaceae | Lecanorales | Lecanoromycetes | Fungi |
| Powder-edged Ruffle Lichen | Parmotrema | stuppeum | | 7 | Parmeliaceae | Lecanorales | Lecanoromycetes | Fungi |
| Variable Cracked-Ruffle | Parmotrema | subisidiosum | | 5 | Parmeliaceae | Lecanorales | Lecanoromycetes | Fungi |
| Unperforated Ruffle Lichen | Parmotrema | submarginale | | 10 | Parmeliaceae | Lecanorales | Lecanoromycetes | Fungi |
| No Common Name | Parmotrema | subrigidum | | 2 | Parmeliaceae | Lecanorales | Lecanoromycetes | Fungi |
| Mottled Ruffle Lichen | Parmotrema | subtinctorium | | 2 | Parmeliaceae | Lecanorales | Lecanoromycetes | Fungi |
| Green Ruffle Lichen | Parmotrema | xanthinum | | 1 | Parmeliaceae | Lecanorales | Lecanoromycetes | Fungi |
| Ragbag | Platismatia | glauca | | 7 | Parmeliaceae | Lecanorales | Lecanoromycetes | Fungi |
| Tuckerman's Ragged Lichen | Platismatia | tuckermanii | | 7 | Parmeliaceae | Lecanorales | Lecanoromycetes | Fungi |
| Common Antler Lichen | Pseudevernia | consocians | | 25 | Parmeliaceae | Lecanorales | Lecanoromycetes | Fungi |
| Appalachian Speckled Shield Lichen | Punctelia | appalachensis | | 0 | Parmeliaceae | Lecanorales | Lecanoromycetes | Fungi |
| Eastern Speckled Shield Lichen | Punctelia | bolliana | | 1 | Parmeliaceae | Lecanorales | Lecanoromycetes | Fungi |
| Borrer's Speckled Shield Lichen | Punctelia | borreri | | 0 | Parmeliaceae | Lecanorales | Lecanoromycetes | Fungi |
| Moondust Speckled Lichen | Punctelia | caseana | | 3 | Parmeliaceae | Lecanorales | Lecanoromycetes | Fungi |
| Mealy Speckled Shield | Punctelia | missouriensis | | 1 | Parmeliaceae | Lecanorales | Lecanoromycetes | Fungi |
| Rough Speckled Shield Lichen | Punctelia | rudecta | | 145 | Parmeliaceae | Lecanorales | Lecanoromycetes | Fungi |
| Powdered Speckled Shield Lichen | Punctelia | subrudecta | | 18 | Parmeliaceae | Lecanorales | Lecanoromycetes | Fungi |
| Dwarf Wrinkle-Lichen | Tuckermanella | fendleri | | 4 | Parmeliaceae | Lecanorales | Lecanoromycetes | Fungi |
| American Tuckermannopsis Lichen | Tuckermannopsis | americana | | 4 | Parmeliaceae | Lecanorales | Lecanoromycetes | Fungi |
| Fringed Wrinkle-Lichen | Tuckermannopsis | ciliaris | | 22 | Parmeliaceae | Lecanorales | Lecanoromycetes | Fungi |
| Warty Beard Lichen | Usnea | ceratina | | 3 | Parmeliaceae | Lecanorales | Lecanoromycetes | Fungi |
| Fishbone Beard Lichen | Usnea | dasopoga | | 1 | Parmeliaceae | Lecanorales | Lecanoromycetes | Fungi |
| Bloody Beard Lichen | Usnea | mutabilis | | 10 | Parmeliaceae | Lecanorales | Lecanoromycetes | Fungi |
| Pennsylvania Beard Lichen | Usnea | pensylvanica | | 2 | Parmeliaceae | Lecanorales | Lecanoromycetes | Fungi |
| Strigose Beard Lichen | Usnea | strigosa | | 85 | Parmeliaceae | Lecanorales | Lecanoromycetes | Fungi |
| Boreal Beard Lichen | Usnea | subfloridana | | 1 | Parmeliaceae | Lecanorales | Lecanoromycetes | Fungi |
| Horny Beard Lichen | Usnea | subscabrosa | | 4 | Parmeliaceae | Lecanorales | Lecanoromycetes | Fungi |
| Bony Beard Lichen | Usnea | trichodea | | 4 | Parmeliaceae | Lecanorales | Lecanoromycetes | Fungi |
| Yellow Ribbon Lichen | Usnocetraria | oakesiana | | 21 | Parmeliaceae | Lecanorales | Lecanoromycetes | Fungi |
| Shingled Rock-Shield | Xanthoparmelia | angustiphylla | | 1 | Parmeliaceae | Lecanorales | Lecanoromycetes | Fungi |
| Peppered Rock-Shield | Xanthoparmelia | conspersa | | 16 | Parmeliaceae | Lecanorales | Lecanoromycetes | Fungi |
| Cumberland Rock-Shield | Xanthoparmelia | cumberlandia | | 6 | Parmeliaceae | Lecanorales | Lecanoromycetes | Fungi |
| Plitt's Rock-Shield | Xanthoparmelia | plittii | | 14 | Parmeliaceae | Lecanorales | Lecanoromycetes | Fungi |
| Shingled Rock-Shield (somloensis) | Xanthoparmelia | somloensis | | 10 | Parmeliaceae | Lecanorales | Lecanoromycetes | Fungi |
| Shingled Rock-Shield (subramigera) | Xanthoparmelia | subramigera | | 9 | Parmeliaceae | Lecanorales | Lecanoromycetes | Fungi |
| Tasmanian Xanthoparmelia Lichen | Xanthoparmelia | tasmanica | | 1 | Parmeliaceae | Lecanorales | Lecanoromycetes | Fungi |
| Shingled Rock-Shield (viriduloumbrina) | Xanthoparmelia | viriduloumbrina | | 2 | Parmeliaceae | Lecanorales | Lecanoromycetes | Fungi |
| No Common Name | Aquacidia | trachona | | 1 | Pilocarpaceae | Lecanorales | Lecanoromycetes | Fungi |
| Brown-disk Fuzzy-Rim | Byssoloma | leucoblepharum | | 2 | Pilocarpaceae | Lecanorales | Lecanoromycetes | Fungi |
| No Common Name | Byssoloma | meadii | | 2 | Pilocarpaceae | Lecanorales | Lecanoromycetes | Fungi |
| Erratic Dot Lichen | Leimonis | erratica | | 3 | Pilocarpaceae | Lecanorales | Lecanoromycetes | Fungi |
| Shadow Dot Lichen | Micarea | peliocarpa | | 4 | Pilocarpaceae | Lecanorales | Lecanoromycetes | Fungi |
| Chewing Gum Lichen | Protoblastenia | rupestris | | 0 | Psoraceae | Lecanorales | Lecanoromycetes | Fungi |
| Blushing Scale | Psora | decipiens | | 0 | Psoraceae | Lecanorales | Lecanoromycetes | Fungi |
| Yellow Scale | Psora | icterica | | 5 | Psoraceae | Lecanorales | Lecanoromycetes | Fungi |
| Russell's Fishscale Lichen | Psora | russellii | | 1 | Psoraceae | Lecanorales | Lecanoromycetes | Fungi |
| Blue-edged Scale Lichen | Psorula | rufonigra | | 7 | Psoraceae | Lecanorales | Lecanoromycetes | Fungi |
| Ekman's Bacidia | Bacidia | ekmaniana | | 3 | Ramalinaceae | Lecanorales | Lecanoromycetes | Fungi |
| No Common Name | Bacidia | laurocerasi | | 1 | Ramalinaceae | Lecanorales | Lecanoromycetes | Fungi |
| No Common Name | Bacidia | polychroa | | 2 | Ramalinaceae | Lecanorales | Lecanoromycetes | Fungi |
| Violet-crowned Bacidia | Bacidia | purpurans | | 1 | Ramalinaceae | Lecanorales | Lecanoromycetes | Fungi |
| Schweinitz's Dotted Lichen | Bacidia | schweinitzii | | 11 | Ramalinaceae | Lecanorales | Lecanoromycetes | Fungi |
| No Common Name | Bacidia | sorediata | | 2 | Ramalinaceae | Lecanorales | Lecanoromycetes | Fungi |
| No Common Name | Bacidina | inundata | | 0 | Ramalinaceae | Lecanorales | Lecanoromycetes | Fungi |
| Flooded Dot Lichen | Bacidina | inundata | | 0 | Ramalinaceae | Lecanorales | Lecanoromycetes | Fungi |
| No Common Name | Bacidina | phacodes | | 0 | Ramalinaceae | Lecanorales | Lecanoromycetes | Fungi |
| Long-spored Dotted Lichen | Biatora | longispora | | 1 | Ramalinaceae | Lecanorales | Lecanoromycetes | Fungi |
| No Common Name | Biatora | pontica | | 1 | Ramalinaceae | Lecanorales | Lecanoromycetes | Fungi |
| Spring Biatora Lichen | Biatora | vernalis | | 1 | Ramalinaceae | Lecanorales | Lecanoromycetes | Fungi |
| Sinewed Ramalina | Ramalina | americana | | 6 | Ramalinaceae | Lecanorales | Lecanoromycetes | Fungi |
| Bumpy Ramalina | Ramalina | complanata | | 2 | Ramalinaceae | Lecanorales | Lecanoromycetes | Fungi |
| Soredia Cartilage Lichen | Ramalina | dilacerata var. sorediata | | 0 | Ramalinaceae | Lecanorales | Lecanoromycetes | Fungi |
| Dotted Ribbon Lichen | Ramalina | fastigiata | | 1 | Ramalinaceae | Lecanorales | Lecanoromycetes | Fungi |
| Rock Bushy Lichen | Ramalina | intermedia | | 1 | Ramalinaceae | Lecanorales | Lecanoromycetes | Fungi |
| Hooded Ribbon Lichen | Ramalina | obtusata | | 1 | Ramalinaceae | Lecanorales | Lecanoromycetes | Fungi |
| No Common Name | Ramalina | petrina | | 1 | Ramalinaceae | Lecanorales | Lecanoromycetes | Fungi |
| Southern Strap | Ramalina | stenospora | | 0 | Ramalinaceae | Lecanorales | Lecanoromycetes | Fungi |
| Willey's Cartilage Lichen | Ramalina | willeyi | | 1 | Ramalinaceae | Lecanorales | Lecanoromycetes | Fungi |
| Rock-Loving Dot Lichen | Woessia | egenula | | 1 | Ramalinaceae | Lecanorales | Lecanoromycetes | Fungi |
| City Dot Lichen | Scoliciosporum | chlorococcum | | 8 | Scoliciosporaceae | Lecanorales | Lecanoromycetes | Fungi |
| Umber Dot Lichen | Scoliciosporum | umbrinum | | 4 | Scoliciosporaceae | Lecanorales | Lecanoromycetes | Fungi |
| No Common Name | Hertelidea | botryosa | | 0 | Stereocaulaceae | Lecanorales | Lecanoromycetes | Fungi |
| No Common Name | Lepraria | caesiella | | 3 | Stereocaulaceae | Lecanorales | Lecanoromycetes | Fungi |
| Zoned Dust Lichen | Lepraria | caesioalba | | 4 | Stereocaulaceae | Lecanorales | Lecanoromycetes | Fungi |
| Fluffy Dust Lichen | Lepraria | finkii | | 45 | Stereocaulaceae | Lecanorales | Lecanoromycetes | Fungi |
| Common Dust Lichen | Lepraria | incana | | 3 | Stereocaulaceae | Lecanorales | Lecanoromycetes | Fungi |
| No Common Name | Lepraria | membranacea | | 5 | Stereocaulaceae | Lecanorales | Lecanoromycetes | Fungi |
| Zoned Dust Lichen | Lepraria | neglecta | | 1 | Stereocaulaceae | Lecanorales | Lecanoromycetes | Fungi |
| Adhering Mealy-Lichen | Leprocaulon | adhaerens | | 1 | Stereocaulaceae | Lecanorales | Lecanoromycetes | Fungi |
| Black-eye Lichen | Tephromela | atra | | 1 | Tephromelataceae | Lecanorales | Lecanoromycetes | Fungi |
| No Common Name | Lecidea | cyrtidia | | 1 | Lecideaceae | Lecideales | Lecanoromycetes | Fungi |
| No Common Name | Lecidea | plebeja | | 1 | Lecideaceae | Lecideales | Lecanoromycetes | Fungi |
| Tile Lichen | Lecidea | tessellata | | 1 | Lecideaceae | Lecideales | Lecanoromycetes | Fungi |
| Berenger's Mycobilimbia Lichen | Mycobilimbia | berengeriana | | 2 | Lecideaceae | Lecideales | Lecanoromycetes | Fungi |
| Smoky-eyed Boulder Lichen | Porpidia | albocaerulescens | | 109 | Lecideaceae | Lecideales | Lecanoromycetes | Fungi |
| Concentric Boulder Lichen | Porpidia | crustulata | | 19 | Lecideaceae | Lecideales | Lecanoromycetes | Fungi |
| Big-disk Pebble Lichen | Porpidia | macrocarpa | | 3 | Lecideaceae | Lecideales | Lecanoromycetes | Fungi |
| No Common Name | Porpidia | subsimplex | | 1 | Lecideaceae | Lecideales | Lecanoromycetes | Fungi |
| No Common Name | Dictyocatenulata | alba | | 1 | Family not established | Order not established | Lecanoromycetes | Fungi |
| Orange Dimple Lichen | Coenogonium | luteum | | 1 | Coenogoniaceae | Ostropales | Lecanoromycetes | Fungi |
| Pink Dimple Lichen | Coenogonium | pineti | | 2 | Coenogoniaceae | Ostropales | Lecanoromycetes | Fungi |
| No Common Name | Gyalideopsis | bartramiorum | | 2 | Gomphillaceae | Ostropales | Lecanoromycetes | Fungi |
| Cowpie Lichen | Diploschistes | muscorum | | 2 | Graphidaceae | Ostropales | Lecanoromycetes | Fungi |
| Crater Lichen | Diploschistes | scruposus | | 8 | Graphidaceae | Ostropales | Lecanoromycetes | Fungi |
| No Common Name | Fissurina | insidiosa | | 2 | Graphidaceae | Ostropales | Lecanoromycetes | Fungi |
| No Common Name | Graphis | inversa | | 1 | Graphidaceae | Ostropales | Lecanoromycetes | Fungi |
| Common Script Lichen | Graphis | scripta | | 123 | Graphidaceae | Ostropales | Lecanoromycetes | Fungi |
| Puddin' Pots Lichen | Nadvornikia | sorediata | | 3 | Graphidaceae | Ostropales | Lecanoromycetes | Fungi |
| No Common Name | Phaeographis | inusta | | 3 | Graphidaceae | Ostropales | Lecanoromycetes | Fungi |
| No Common Name | Thelotrema | monospermum | | 1 | Graphidaceae | Ostropales | Lecanoromycetes | Fungi |
| Common Bark-Barnacles | Thelotrema | subtile | | 2 | Graphidaceae | Ostropales | Lecanoromycetes | Fungi |
| Bark Stars | Ramonia | microspora | | 1 | Gyalectaceae | Ostropales | Lecanoromycetes | Fungi |
| Bark Whitewash | Phlyctis | boliviensis | | 6 | Phlyctidaceae | Ostropales | Lecanoromycetes | Fungi |
| No Common Name | Phlyctis | petraea | | 4 | Phlyctidaceae | Ostropales | Lecanoromycetes | Fungi |
| Southeastern Pimple Lichen | Porina | heterospora | | 2 | Porinaceae | Ostropales | Lecanoromycetes | Fungi |
| Common Dusk Lichen | Pseudosagedia | cestrensis | | 1 | Porinaceae | Ostropales | Lecanoromycetes | Fungi |
| Big-spore Dusk Lichen | Pseudosagedia | rhaphidosperma | | 1 | Porinaceae | Ostropales | Lecanoromycetes | Fungi |
| Fruiting Shell Lichen | Coccocarpia | erythroxyli | | 0 | Coccocarpiaceae | Peltigerales | Lecanoromycetes | Fungi |
| Salted Shell Lichen | Coccocarpia | palmicola | | 7 | Coccocarpiaceae | Peltigerales | Lecanoromycetes | Fungi |
| Blistered Jelly-Lichen | Collema | furfuraceum | | 3 | Collemataceae | Peltigerales | Lecanoromycetes | Fungi |
| Crumpled Bat's Wing | Collema | leptaleum | | 0 | Collemataceae | Peltigerales | Lecanoromycetes | Fungi |
| Common Tree-Jelly | Collema | subflaccidum | | 3 | Collemataceae | Peltigerales | Lecanoromycetes | Fungi |
| Tar Jelly Lichen | Enchylium | coccophorum | | 0 | Collemataceae | Peltigerales | Lecanoromycetes | Fungi |
| Conglomerate Jelly Lichen | Enchylium | conglomeratum | | 0 | Collemataceae | Peltigerales | Lecanoromycetes | Fungi |
| Crumpled Rock-Jelly | Lathagrium | fuscovirens | | 0 | Collemataceae | Peltigerales | Lecanoromycetes | Fungi |
| Undulate Jelly Lichen | Lathagrium | undulatum | | 0 | Collemataceae | Peltigerales | Lecanoromycetes | Fungi |
| Blue Skin Lichen | Leptogium | azureum | | 1 | Collemataceae | Peltigerales | Lecanoromycetes | Fungi |
| Blue Jellyskin | Leptogium | cyanescens | | 35 | Collemataceae | Peltigerales | Lecanoromycetes | Fungi |
| Frilly Jellyskin | Leptogium | phyllocarpum | | 0 | Collemataceae | Peltigerales | Lecanoromycetes | Fungi |
| Tattered Jellyskin | Scytinium | lichenoides | | 6 | Collemataceae | Peltigerales | Lecanoromycetes | Fungi |
| Appressed Jellyskin Lichen | Scytinium | subtile | | 1 | Collemataceae | Peltigerales | Lecanoromycetes | Fungi |
| Lungwort | Lobaria | pulmonaria | | 11 | Lobariaceae | Peltigerales | Lecanoromycetes | Fungi |
| Smooth Lungwort | Ricasolia | quercizans | | 30 | Lobariaceae | Peltigerales | Lecanoromycetes | Fungi |
| Peppered Moon Lichen | Sticta | fuliginosa | | 1 | Lobariaceae | Peltigerales | Lecanoromycetes | Fungi |
| Spotted Felt Lichen | Sticta | weigelii | | 6 | Lobariaceae | Peltigerales | Lecanoromycetes | Fungi |
| Swiss Kidney Lichen | Nephroma | helveticum | | 5 | Nephromataceae | Peltigerales | Lecanoromycetes | Fungi |
| Rimmed Shingle Lichen | Fuscopannaria | leucosticta | | 3 | Pannariaceae | Peltigerales | Lecanoromycetes | Fungi |
| Mealy-rimmed Shingle Lichen | Pannaria | conoplea | | 0 | Pannariaceae | Peltigerales | Lecanoromycetes | Fungi |
| Veined Shingle Lichen | Pannaria | lurida | | 0 | Pannariaceae | Peltigerales | Lecanoromycetes | Fungi |
| Common Freckle Pelt | Peltigera | aphthosa | | 5 | Peltigeraceae | Peltigerales | Lecanoromycetes | Fungi |
| Dog-Lichen | Peltigera | canina | | 20 | Peltigeraceae | Peltigerales | Lecanoromycetes | Fungi |
| Alternating Dog-Lichen | Peltigera | didactyla | | 3 | Peltigeraceae | Peltigerales | Lecanoromycetes | Fungi |
| Elizabeth's Felt Lichen | Peltigera | elisabethae | | 1 | Peltigeraceae | Peltigerales | Lecanoromycetes | Fungi |
| Evans's Felt Lichen | Peltigera | evansiana | | 3 | Peltigeraceae | Peltigerales | Lecanoromycetes | Fungi |
| Horizontal Felt Lichen | Peltigera | horizontalis | | 3 | Peltigeraceae | Peltigerales | Lecanoromycetes | Fungi |
| Black Saddle Lichen | Peltigera | neckeri | | 1 | Peltigeraceae | Peltigerales | Lecanoromycetes | Fungi |
| Many-fruited Pelt | Peltigera | polydactylon | | 1 | Peltigeraceae | Peltigerales | Lecanoromycetes | Fungi |
| Scaly Dog-Lichen | Peltigera | praetextata | | 8 | Peltigeraceae | Peltigerales | Lecanoromycetes | Fungi |
| Field Dog-Lichen | Peltigera | rufescens | | 16 | Peltigeraceae | Peltigerales | Lecanoromycetes | Fungi |
| Common Ink Lichen | Placynthium | nigrum | | 9 | Placynthiaceae | Peltigerales | Lecanoromycetes | Fungi |
| Rock Shingle Lichen | Vahliella | leucophaea | | 0 | Vahliellaceae | Peltigerales | Lecanoromycetes | Fungi |
| Pink Earth Lichen | Dibaeis | baeomyces | | 76 | Icmadophilaceae | Pertusariales | Lecanoromycetes | Fungi |
| Cinder Lichen | Aspicilia | cinerea | | 8 | Megasporaceae | Pertusariales | Lecanoromycetes | Fungi |
| Blue-gray Sunken-Disk | Circinaria | caesiocinerea | | 6 | Megasporaceae | Pertusariales | Lecanoromycetes | Fungi |
| Frosty Saucer Lichen | Ochrolechia | africana | | 4 | Ochrolechiaceae | Pertusariales | Lecanoromycetes | Fungi |
| Powdery Saucer Lichen | Ochrolechia | androgyna | | 1 | Ochrolechiaceae | Pertusariales | Lecanoromycetes | Fungi |
| Tree Saucer Lichen | Ochrolechia | arborea | | 1 | Ochrolechiaceae | Pertusariales | Lecanoromycetes | Fungi |
| No Common Name | Ochrolechia | mahluensis | | 1 | Ochrolechiaceae | Pertusariales | Lecanoromycetes | Fungi |
| Crawfish Lichen | Ochrolechia | parella | | 1 | Ochrolechiaceae | Pertusariales | Lecanoromycetes | Fungi |
| Appalachian Saucer | Ochrolechia | pseudopallescens | | 1 | Ochrolechiaceae | Pertusariales | Lecanoromycetes | Fungi |
| Rosy Saucer Lichen | Ochrolechia | trochophora | | 7 | Ochrolechiaceae | Pertusariales | Lecanoromycetes | Fungi |
| Yasuda's Crab-eye Lichen | Ochrolechia | yasudae | | 2 | Ochrolechiaceae | Pertusariales | Lecanoromycetes | Fungi |
| Rimmed Wart Lichen | Varicellaria | velata | | 6 | Ochrolechiaceae | Pertusariales | Lecanoromycetes | Fungi |
| Bitter Wart Lichen | Lepra | amara | | 2 | Pertusariaceae | Pertusariales | Lecanoromycetes | Fungi |
| Hypothamnolic Fluff-Wart | Lepra | hypothamnolica | | 0 | Pertusariaceae | Pertusariales | Lecanoromycetes | Fungi |
| Fumarprotocetraric Fluff-Wart | Lepra | multipunctoides | | 4 | Pertusariaceae | Pertusariales | Lecanoromycetes | Fungi |
| Ragged Wart Lichen | Lepra | ophthalmiza | | 4 | Pertusariaceae | Pertusariales | Lecanoromycetes | Fungi |
| Pustule Crust Lichen | Lepra | pustulata | | 4 | Pertusariaceae | Pertusariales | Lecanoromycetes | Fungi |
| Powdered Wart Lichen | Lepra | trachythallina | | 1 | Pertusariaceae | Pertusariales | Lecanoromycetes | Fungi |
| Waghorne's Pore Lichen | Lepra | waghornei | | 0 | Pertusariaceae | Pertusariales | Lecanoromycetes | Fungi |
| No Common Name | Pertusaria | epixantha | | 1 | Pertusariaceae | Pertusariales | Lecanoromycetes | Fungi |
| Ballhead Pore Lichen | Pertusaria | globularis | | 0 | Pertusariaceae | Pertusariales | Lecanoromycetes | Fungi |
| Macoun's Pore Lichen | Pertusaria | macounii | | 0 | Pertusariaceae | Pertusariales | Lecanoromycetes | Fungi |
| Spotted Wart Lichen | Pertusaria | paratuberculifera | | 14 | Pertusariaceae | Pertusariales | Lecanoromycetes | Fungi |
| Plitt's Pore Lichen | Pertusaria | plittiana | | 6 | Pertusariaceae | Pertusariales | Lecanoromycetes | Fungi |
| False Flasks | Pertusaria | propinqua | | 1 | Pertusariaceae | Pertusariales | Lecanoromycetes | Fungi |
| No Common Name | Pertusaria | pustulata | | 9 | Pertusariaceae | Pertusariales | Lecanoromycetes | Fungi |
| No Common Name | Pertusaria | rubefacta | | 0 | Pertusariaceae | Pertusariales | Lecanoromycetes | Fungi |
| Mesa Wart Lichen | Pertusaria | subpertusa | | 5 | Pertusariaceae | Pertusariales | Lecanoromycetes | Fungi |
| No Common Name | Pertusaria | tetrathalamia | | 0 | Pertusariaceae | Pertusariales | Lecanoromycetes | Fungi |
| Texan Pore Lichen | Pertusaria | texana | | 4 | Pertusariaceae | Pertusariales | Lecanoromycetes | Fungi |
| Volcano Wart Lichen | Pertusaria | xanthodes | | 5 | Pertusariaceae | Pertusariales | Lecanoromycetes | Fungi |
| Concentric Map Lichen | Rhizocarpon | concentricum | | 3 | Rhizocarpaceae | Rhizocarpales | Lecanoromycetes | Fungi |
| No Common Name | Rhizocarpon | eupetraeum | | 0 | Rhizocarpaceae | Rhizocarpales | Lecanoromycetes | Fungi |
| World Map Lichen | Rhizocarpon | geographicum | | 0 | Rhizocarpaceae | Rhizocarpales | Lecanoromycetes | Fungi |
| Obscure Map Lichen | Rhizocarpon | obscuratum | | 1 | Rhizocarpaceae | Rhizocarpales | Lecanoromycetes | Fungi |
| American Sunrise | Brigantiaea | leucoxantha | | 2 | Brigantiaeaceae | Teloschistales | Lecanoromycetes | Fungi |
| Firedot Lichen | Athallia | holocarpa | | 4 | Teloschistaceae | Teloschistales | Lecanoromycetes | Fungi |
| No Common Name | Blastenia | crenularia | | 0 | Teloschistaceae | Teloschistales | Lecanoromycetes | Fungi |
| Red Firedot Lichen | Blastenia | ferruginea | | 5 | Teloschistaceae | Teloschistales | Lecanoromycetes | Fungi |
| Broken Yolks | Calogaya | decipiens | | 1 | Teloschistaceae | Teloschistales | Lecanoromycetes | Fungi |
| Gray-rimmed Firedot Lichen | Caloplaca | cerina | | 7 | Teloschistaceae | Teloschistales | Lecanoromycetes | Fungi |
| Beaded Firedot | Caloplaca | sideritis | | 2 | Teloschistaceae | Teloschistales | Lecanoromycetes | Fungi |
| Mealy Firedot Lichen | Flavoplaca | citrina | | 6 | Teloschistaceae | Teloschistales | Lecanoromycetes | Fungi |
| Sulphur-firedot Lichen | Gyalolechia | flavovirescens | | 17 | Teloschistaceae | Teloschistales | Lecanoromycetes | Fungi |
| Brown Firedot | Obscuroplaca | camptidia | | 1 | Teloschistaceae | Teloschistales | Lecanoromycetes | Fungi |
| Bark Sulphur-firedot Lichen | Opeltia | flavorubescens | | 9 | Teloschistaceae | Teloschistales | Lecanoromycetes | Fungi |
| Oxford Orange Lichen | Rufoplaca | oxfordensis | | 1 | Teloschistaceae | Teloschistales | Lecanoromycetes | Fungi |
| No Common Name | Seawardiella | lobulata | | 2 | Teloschistaceae | Teloschistales | Lecanoromycetes | Fungi |
| Orange Atoms | Squamulea | subsoluta | | 4 | Teloschistaceae | Teloschistales | Lecanoromycetes | Fungi |
| No Common Name | Tayloriellina | microphyllina | | 1 | Teloschistaceae | Teloschistales | Lecanoromycetes | Fungi |
| Gold-eye Lichen | Teloschistes | chrysophthalmus | | 7 | Teloschistaceae | Teloschistales | Lecanoromycetes | Fungi |
| Sidewalk Firedot Lichen | Xanthocarpia | feracissima | | 21 | Teloschistaceae | Teloschistales | Lecanoromycetes | Fungi |
| Hooded Sunburst Lichen | Xanthomendoza | fallax | | 5 | Teloschistaceae | Teloschistales | Lecanoromycetes | Fungi |
| Bare-bottomed Sunburst Lichen | Xanthomendoza | fulva | | 1 | Teloschistaceae | Teloschistales | Lecanoromycetes | Fungi |
| Bare-bottom Sunburst Lichen | Xanthomendoza | weberi | | 124 | Teloschistaceae | Teloschistales | Lecanoromycetes | Fungi |
| No Common Name | Sarcosagium | campestre | | 0 | Thelocarpaceae | Thelocarpales | Lecanoromycetes | Fungi |
| No Common Name | Placynthiella | oligotropha | | 2 | Trapeliaceae | Trapeliales | Lecanoromycetes | Fungi |
| Tar-spot Lichen | Placynthiella | uliginosa | | 22 | Trapeliaceae | Trapeliales | Lecanoromycetes | Fungi |
| No Common Name | Trapelia | coarctata | | 0 | Trapeliaceae | Trapeliales | Lecanoromycetes | Fungi |
| Board Lichen | Trapeliopsis | flexuosa | | 5 | Trapeliaceae | Trapeliales | Lecanoromycetes | Fungi |
| Granular Trapeliopsis Lichen | Trapeliopsis | granulosa | | 4 | Trapeliaceae | Trapeliales | Lecanoromycetes | Fungi |
| No Common Name | Trapeliopsis | viridescens | | 1 | Trapeliaceae | Trapeliales | Lecanoromycetes | Fungi |
| No Common Name | Fuscidea | arboricola | | 1 | Fuscideaceae | Umbilicariales | Lecanoromycetes | Fungi |
| Quilt Lichen | Fuscidea | recensa | | 2 | Fuscideaceae | Umbilicariales | Lecanoromycetes | Fungi |
| Quilt Lichen (var. arcuatula) | Fuscidea | recensa var. arcuatula | | 1 | Fuscideaceae | Umbilicariales | Lecanoromycetes | Fungi |
| Common Clam Lichen | Hypocenomyce | scalaris | | 4 | Ophioparmaceae | Umbilicariales | Lecanoromycetes | Fungi |
| Common Toadskin | Lasallia | papulosa | | 80 | Umbilicariaceae | Umbilicariales | Lecanoromycetes | Fungi |
| Pennsylvania Blistered Naval Lichen | Lasallia | pensylvanica | | 31 | Umbilicariaceae | Umbilicariales | Lecanoromycetes | Fungi |
| Blistered Navel Lichen | Lasallia | pustulata | | 1 | Umbilicariaceae | Umbilicariales | Lecanoromycetes | Fungi |
| Frosted Rock Tripe | Umbilicaria | americana | | 0 | Umbilicariaceae | Umbilicariales | Lecanoromycetes | Fungi |
| Smooth Rock Tripe | Umbilicaria | mammulata | | 101 | Umbilicariaceae | Umbilicariales | Lecanoromycetes | Fungi |
| Muehlenberg's Navel Lichen | Umbilicaria | muhlenbergii | | 1 | Umbilicariaceae | Umbilicariales | Lecanoromycetes | Fungi |