| Ahtiana aurescens (Tuck.) Thell & Randlane |
| Allocetraria oakesiana (Tuck.) Randlane & Thell |
| Anaptychia palmulata (Michaux) Vainio |
| Anzia colpodes (Ach.) Stizenb. |
| Bryoria furcellata (Fr.) Brodo & Hawksw. |
| Candelaria concolor (Dickson) Stein |
| Candelaria fibrosa (Fr.) Mull. Arg. |
| Canomaculina subtinctoria (Zahlbr.) Elix |
| Canoparmelia amabilis Heiman & Elix |
| Canoparmelia caroliniana (Nyl.) Elix & Hale |
| Canoparmelia crozalsiana (de Lesd. ex Harm.) Elix & Hale |
| Canoparmelia texana (Tuck.) Elix & Hale |
| Cetraria arenaria Karnefelt |
| Cetrelia chicitae (Culb.) Culb. & C. Culb. |
| Cetrelia olivetorum (Nyl.) Culb. & C. Culb. |
| Cladonia apodocarpa Robb. |
| Cladonia arbuscula (Wallr.) Flotow |
| Cladonia caespiticia (Pers.) Florke |
| Cladonia caroliniana Tuck. |
| Cladonia cervicornis (Hoffm.) Ahti |
| Cladonia chlorophaea (Florke ex Sommerf.) Sprengel |
| Cladonia coniocraea (Florke) Sprengel |
| Cladonia cristatella Tuck. |
| Cladonia cryptochlorophaea Asah. |
| Cladonia cylindrica (A. Evans) A. Evans |
| Cladonia didyma (Fee) Vainio |
| Cladonia fimbriata (L.) Fr. |
| Cladonia floerkeana (Fr.) Florke |
| Cladonia floridana Vainio |
| Cladonia furcata (Hudson) Schrader |
| Cladonia grayi G. Merr. ex Sandst. |
| Cladonia humilis (With.) J. R. Laundon |
| Cladonia incrassata Florke |
| Cladonia macilenta Hoffm. |
| Cladonia mateocyatha Robbins |
| Cladonia ochrochlora Florke |
| Cladonia parasitica (Hoffm.) Hoffm. |
| Cladonia petrophila R. C. Harris |
| Cladonia peziziformis (With.) J. R. Laundon |
| Cladonia piedmontensis G. Merr. |
| Cladonia pleurota (Florke) Schaerer |
| Cladonia polycarpoides Nyl. |
| Cladonia pyxidata (L.) Hoffm. |
| Cladonia ramulosa (With.) J. R. Laundon |
| Cladonia rangiferina (L.) F. H. /wigg. |
| Cladonia rei Schaerer |
| Cladonia robbinsii A. Evans |
| Cladonia sobolescens Nyl. ex Vainio |
| Cladonia squamosa Hoffm. |
| Cladonia strepsilis (Ach.) Grognot |
| Cladonia subtenuis (Abbayes) Mattick |
| Cladonia uncialis (L.) F. H. Wigg. |
| Coccocarpia palmicola (Sprengel) Arv. & D. J. Galloway |
| Collema bachmanianum (Fink) Degel. |
| Collema conglomeratum Hoffm. |
| Collema crispum (Hudson) F. H. Wigg. |
| Collema fragrans (Sm.) Ach. |
| Collema fuscovirens (With.) J. R. Laundon |
| Collema nigrescens (Hudson) DC. |
| Collema polycarpon Hoffm. |
| Collema subflaccidum Degel. |
| Collema tenax (Sw.) Ach. |
| Dermatocarpon luridum (With.) J. R. Laundon |
| Dermatocarpon muhlenbergii (Ach.) Arg. |
| Dibaeis absoluta (Tuck.) Kalb & Gierl |
| Dibaeis baeomyces (L. f.) Rambold & Hertel |
| Dirinaria frostii (Tuck.) Hale & Culb. |
| Dolichousnea longissima Ach. |
| Enchylium coccophorum Tuck. |
| Ephebe lanata (L.) Vainio |
| Evernia mesomorpha Nyl. |
| Flavoparmelia baltimorensis (Gyelnik & Foriss) Hale |
| Flavoparmelia caperata (L.) Hale |
| Flavopunctelia flaventior (Stirton) Hale |
| Flavopunctelia soredica (Nyl.) Hale |
| Fuscopannaria leucophaea (Vahl) P. M. Jorg. |
| Fuscopannaria leucosticta (Tuck.) P. M. Jorg. |
| Heterodermia albicans (Pers.) Swinscow & Krog |
| Heterodermia casarettiana (A. Massal.) Trevisan |
| Heterodermia echinata (Taylor) Culb. |
| Heterodermia granulifera (Ach.) Culb. |
| Heterodermia hypoleuca (Ach.) Trevisan |
| Heterodermia leucomela (L.) Poelt |
| Heterodermia obscurata (Nyl.) Trevisan |
| Heterodermia pseudospeciosa (Lurok.) Culb. |
| Heterodermia speciosa (Wulfen) Trevisan |
| Heterodermia squamulosa (Degel.) Culb. |
| Hyperphyscia adglutinata (Florke) H. Mayrh. & Poelt |
| Hyperphyscia confusa Essl. |
| Hyperphyscia syncolla (Tuck. ex Nyl.) Kalb |
| Hypogymnia physodes (Nyl.) Nyl. |
| Hypotrachyna livida (Taylor) Hale |
| Hypotrachyna osseoalba (Vainio) Park & Hale |
| Hypotrachyna showmanii Hale |
| Imshaugia aleurites (Ach.) S. F. Meyer |
| Imshaugia placorodia (Ach.) S. F. Meyer |
| Lasallia papulosa (Ach.) Llano |
| Lasallia pensylvanica (Hofm.) Llano |
| Leptogium aburnetiae C. W. Dodge |
| Leptogium austroamericanum (Malme) C. W. Dodge |
| Leptogium corticola (Taylor) Tuck. |
| Leptogium cyanescens (Rabenh.) Korber |
| Leptogium dactylinum Tuck. |
| Leptogium juniperinum Tuck. |
| Leptogium lichenoides (L.) Zahlbr. |
| Leptogium milligranum Sierk |
| Leptogium subtile (Schrader) Torss. |
| Leptogium tenuissimum (Dichson) Korber |
| Lobaria pulmonaria (L.) Hoffm. |
| Lobaria quercizans Michaux |
| Melanelixia subaurifera (Nyl.) O. Blanco et al. |
| Melanohalia exasperata (De Not.) O. Blanco et al. |
| Menegazzia terebrata (Hoffm.) A. Massal. |
| Myelochroa aurulenta (Tuck.) Elix & Hale |
| Myelochroa galbina (Ach.) Elix & Hale |
| Myelochroa metarevoluta (Asah.) Elix & Hale |
| Myelochroa obsessa (Ach.0 Elix & Hale |
| Nephroma helveticum Ach. |
| Pannaria lurida (Mont.) Nyl. |
| Pannaria rubignosa (Ach.) Bory |
| Parmelia squarrosa Hale |
| Parmelia sulcata Taylor |
| Parmelinopsis horrescens (Taylor) Elix & Hale |
| Parmelinopsis minarum (Vainio) Elix & Hale |
| Parmotrema arnoldii (Du Rietz) Hale |
| Parmotrema austrosinense (Zahlbr.) Hale |
| Parmotrema cetratum (Ach.) Hale |
| Parmotrema chinense (Osbeck) Hale & Ahti |
| Parmotrema crinitum (Ach.) Choisy |
| Parmotrema despectum Kurok. |
| Parmotrema gardneri (C. W. Dodge) Serus |
| Parmotrema hypotropum (Nyl.) Hale |
| Parmotrema madagascariaceum (Hue) Hale |
| Parmotrema margaritatum (Hue) Hale |
| Parmotrema perforatum (Jacq.) A. Massal. |
| Parmotrema reticulatum (Taylor) M. Choisy |
| Parmotrema stuppeum (Taylor) Hale |
| Parmotrema subisidiosum (Mull. Arg.) Hale |
| Parmotrema submarginale (Michaux.) DePriest & B. Hale |
| Parmotrema ultralucens (Krog) Hale |
| Parmotrema xanthinum (Mull. Arg.) Hale |
| Peltigera aphthosa (L.) Willd. |
| Peltigera canina (L.) Willd. |
| Peltigera didactyla (With.) J. R. Laundon |
| Peltigera elisabethae Gyelnik |
| Peltigera evansiana Gyelnik |
| Peltigera horizontalis (Hudson) Baumg. |
| Peltigera polydactylon (Necker) Hoffm. |
| Peltigera praetextata (Florke ex Sommerf.) Zopf |
| Phaeophyscia adiastola (Essl.) Essl. |
| Phaeophyscia ciliata (Hoffm.) Moberg |
| Phaeophyscia decolor (Kashiw.) Essl. |
| Phaeophyscia hirsuta (Mereschk.) Essl. |
| Phaeophyscia hirtella Essl. |
| Phaeophyscia hispidula (Ach.) Essl. |
| Phaeophyscia insignis (Mereschk.) Moberg |
| Phaeophyscia leana (Tuck.) Essl. |
| Phaeophyscia orbicularis (Necker) Moberg |
| Phaeophyscia pusilloides (Zahlbr.) Essl. |
| Phaeophyscia rubropulchra (Degel.) Essl. |
| Pheophyscia squarrosa Kashiwadani |
| Physcia adscendens (Fr.) H. Oliver |
| Physcia aipolia (Ehrh. ex Humb.) Furnr. |
| Physcia americana G. Merr. |
| Physcia caesia (Hofm.) Furnr. |
| Physcia halei J. W. Thomson |
| Physcia millegrana Degel. |
| Physcia phaea (Tuck.) J. W. Thomson |
| Physcia pumilior R. C. Harris |
| Physcia stellaris (L.) Nyl. |
| Physcia subtilis Degel. |
| Physciella chloantha (Ach.) Essl. |
| Physciella melanchra (Hue) Essl. |
| Physconia detersa (Nyl.) Poelt |
| Physconia enteroxantha |
| Physconia leucoleiptes (Tuck.) Essl. |
| Physconia subpallida Essl. |
| Placidium aboreum (Schwein. ex Michener) Lendemer |
| Placidium squamulosum (Ach.) Breuss |
| Platismatia tuckermanii (Rav. ex Mont.) Breuss |
| Pseudevernia consocians (Vainio) Hale & Culb. |
| Pseudocyphellaria aurata (Ach.) Vainio |
| Punctelia bolliana (Mull. Arg.) Krog |
| Punctelia borreri (Sm.) Krog |
| Punctelia caseana Lendemer & Hodkinson |
| Punctelia missouriensis G. Wilh. & Ladd |
| Punctelia perreticulata (Rasanen) Wilhelm & Ladd |
| Punctelia rudecta (Ach.) Krog |
| Pycnothelia papillaria Durfour |
| Pyxine sorediata (Ach.) Mont |
| Pyxine subcinerea Stirton |
| Ramalina americana Hale |
| Ramalina celastri (Sprengel) Krog & Swinscow |
| Ramalina complanata (Sw.) Ach. |
| Ramalina farinacea (L.) Ach. |
| Ramalina intermedia (Delise ex Nyl.) Nyl. |
| Ramalina petrina Bowler & Rundel |
| Ramalina pollinaria (Westr.) Ach. |
| Ramalina roesleri (Hochst. ex Schaerer) Hue |
| Stereocaulon saxatile H. Magn. |
| Stereocaulon tomentosum Fr. |
| Sticta beauvoisii Delise |
| Teloschistes chrysophthalmus (L.) Th. Fr. |
| Thyrea confusa Henssen |
| Tuckermanella fendleri (Nyl.) Essl. |
| Tuckermannopsis americana (Sprengel) Hale |
| Tuckermannopsis ciliaris (ach.) Gyelnik |
| Umbilicaria mammulata (Ach.) Tuck. |
| Umbilicaria muehlenbergii (Ach.) Tuck. |
| Umbilicaria vellea (L.) Hoffm. |
| Usnea amblyoclada (Mull. Arg.) Zahlbr. |
| Usnea angulata (Ach.) |
| Usnea ceratina Ach. |
| Usnea cornuta Korber |
| Usnea endochrysea Stirton |
| Usnea hirta (L.) F. H. Wigg |
| Usnea mutabilis Stirton |
| Usnea pensylvanica Motyka |
| Usnea strigosa (Ach.) Eaton |
| Usnea subfloridana Stirton |
| Usnea subscabrosa Mott. |
| Usnea substerilis Motyka |
| Vulpicida viridis (Schwein.) J._E. Mattsson & M. J. Lai |
| Xanthomendoza fallax (Hepp ex Arnold) Sochting, Karnfelt & S. Kondr. |
| Xanthomendoza hasseana (Rasanen) Sochting, Karnefelt & S. Kondr. |
| Xanthomendoza ulophyllodes (Rasanen) Sochting, Karnefelt & S. Kondr. |
| Xanthomendoza weberi (S. Kondr. & Karnefelt) L. Lindblom |
| Xanthoparmelia angustiphylla (Gyelnik) Hale |
| Xanthoparmelia conspersa (Ehrh. ex Ach.) Hale |
| Xanthoparmelia cumberlandia (Gyelnik) Hale |
| Xanthoparmelia hypomelaena (Hale) Hale |
| Xanthoparmelia plittii (Gyelnik) Hale |
| Xanthoparmelia stenophylla (Ach.) Ahti & D. Hawksw. |
| Xanthoparmelia subramigera (Gyelnik) Hale |
| Xanthoparmelia tasmanica (Hook. F. & Taylor) Hale |
| Xanthoria elegans (Link) Th. Fr. |
| Xanthoria polycarpa (Hoffm.) Rieber |
