Checklist of lichens of Illinois (USA)
Version 31 December 2017
- Acarospora americana H. Magn. - Magnusson (1929: 198 Type in UPS), Magnusson (1929: 205 as Acarospora cinereoalba Type in New York, USA NY)
- Amandinea punctata (Hoffm.) Coppins & Scheid. - Skorepa (1970: 78)
- Anaptychia palmulata (Michx.) Vain. - Wilhelm & Ladd (1985: 213)
- Anisomeridium biforme (Borrer) R. C. Harris - Skorepa (1970: 78 as Arthopyrenia biformis), Wilson & Methven (1997: 450)
- Anisomeridium polypori (Ellis & Everh.) M. E. Barr - McKnight et al. (1987: 26 as Anisomeridium nyssaegenum)
- Anzia colpodes (Ach.) Stizenb. - Skorepa & Snider (1967: 105), Wilhelm & Ladd (1985: 213)
- Bacidina inundata (Fr.) Vezda - Skorepa (1970: 78 as Bacidia inundata)
- Buellia erubescens Arnold - Wilson & Methven (1997: 450 as Buellia stillingiana)
- Caloplaca cerina (Ehrh. ex Hedw.) Th. Fr. - Wilson & Methven (1997: 450)
- Caloplaca microphyllina
(Tuck.) Hasse - Skorepa (1970: 78)
- Candelaria concolor (Dicks.) B. Stein - Skorepa (1970: 78), Wilhelm & Ladd (1985: 213), Wilhelm & Lampa (1987: 46), Muir & McCune (1988: 365), Wilson & Methven (1997: 450)
- Candelaria fibrosa (Fr.) Müll. Arg. - Skorepa & Snider (1967: 105)
- Candelariella efflorescens R. C. Harris & Buck - McKnight et al. (1987: 27)
- Candelariella vitellina (Hoffm.) Müll. Arg. - Skorepa (1970: 78 as Candelaria vitellina)
- Candelariella xanthostigma (Ach.) Lettau - McKnight et al. (1987: 27), Wilson & Methven (1997: 450)
- Canoparmelia caroliniana (Nyl.) Elix & Hale - Skorepa & Snider (1967: 105 as Parmelia caroliniana)
- Canoparmelia crozalsiana (B. de Lesd. ex Harm.) Hale - Wilhelm & Ladd (1985: 228 as Pseudoparmelia crozalsiana), Muir & McCune (1988: 365 as Pseudoparmelia crozalsiana)
- Canoparmelia texana (Tuck.) Elix & Hale - Czeczuga & Wilhelm (1992: 6)
- Cetraria arenaria Kärnefelt - McKnight et al. (1987: 27)
- Chrysothrix caesia (Flot.) Ertz & Tehler - Skorepa (1970: 78 as Allarthonia caesia)
- Ciposia wheeleri (R. C. Harris) Marbach - Wilson & Methven (1997: 450 as Buellia wheeleri)
- Cladonia apodocarpa Robb. - Wilhelm & Ladd (1985: 215)
- Cladonia atlantica Evans - Skorepa & Snider (1967: 105), Wilhelm & Ladd (1985: 215)
- Cladonia bacillaris (Ach.) Nyl. - Wilhelm & Ladd (1985: 215), Wilhelm & Lampa (1987: 47)
- Cladonia caespiticia (Pers.) Flörke - Skorepa (1970: 78), Wilhelm & Ladd (1985: 216)
- Cladonia peziziformis (Michx.) Spreng. - Wilhelm & Ladd (1985: 216 as Cladonia capitata)
- Cladonia cariosa (Ach.) Spreng. - Wilhelm & Ladd (1985: 216)
- Cladonia caroliniana (Schwein.) Tuck. - Wilhelm & Ladd (1985: 216), Czeczuga & Wilhelm (1992: 6)
- Cladonia cervicornis (Ach.) Flot. subsp. verticillata (Hoffm.) Ahti - Wilhelm & Lampa (1987: 47)
- Cladonia chlorophaea (Flörke) Spreng. - Stotler (1976: 9), Wilhelm & Ladd (1985: 216), Wilhelm & Lampa (1987: 47)
- Cladonia coniocraea (Flörke) Spreng. - Wilhelm & Ladd (1985: 216), Wilhelm & Lampa (1987: 47)
- Cladonia cristatella Tuck. - Skorepa (1970: 78), Stotler (1976: 9), Wilhelm & Ladd (1985: 217), Wilhelm & Lampa (1987: 47)
- Cladonia cryptochlorophaea Asahina - Wilhelm & Lampa (1987: 47)
- Cladonia cylindrica (A. Evans) A. Evans - Wilhelm & Lampa (1987: 47), Muir & McCune (1988: 365)
- Cladonia decorticata (Flörke) Spreng. - Skorepa (1970: 78)
- Cladonia didyma (Fée) Vain. - Wilhelm & Lampa (1987: 48)
- Cladonia fimbriata (L.) Fr. - Wilhelm & Lampa (1987: 47)
- Cladonia furcata (Huds.) Schrad. - Skorepa (1970: 78), Wilhelm & Ladd (1985: 217), Wilhelm & Lampa (1987: 48), Czeczuga & Wilhelm (1992: 6)
- Cladonia grayi G. K. Merr. ex Sandst. - Wilhelm & Lampa (1987: 48), Czeczuga & Wilhelm (1992: 6)
- Cladonia homosekikaica Nuno - McKnight et al. (1987: 28)
- Cladonia multiformis G. K. Merr. - McKnight et al. (1987: 28), Wilhelm & Lampa (1987: 48)
- Cladonia peziziformis (With.) J. R. Laundon - Wilhelm & Lampa (1987: 48)
- Cladonia piedmontensis Merr. - Wilhelm & Ladd (1985: 217), Wilhelm & Lampa (1987: 48)
- Cladonia pleurota (Flörke) Schaer. - Wilhelm & Ladd (1985: 217), Wilhelm & Lampa (1987: 48)
- Cladonia pyxidata (L.) Hoffm. - Skorepa (1970: 78)
- Cladonia ramulosa (With.) J. R. Laundon - Wilhelm & Lampa (1987: 48)
- Cladonia rangiferina - Stotler (1976: 9)
- Cladonia rei Schaer. - Wilhelm & Lampa (1987: 48)
- Cladonia robbinsii Evans - Skorepa (1970: 79), Wilhelm & Ladd (1985: 217), Czeczuga & Wilhelm (1992: 6)
- Cladonia squamosa (Scop.) Hoffm. - Wilhelm & Ladd (1985: 218), Czeczuga & Wilhelm (1992: 6)
- Cladonia strepsilis (Ach.) Grognot - Wilhelm & Ladd (1985: 218), Czeczuga & Wilhelm (1992: 6)
- Cladonia subcariosa Nyl. - Stotler (1976: 9 as Cladonia clavulifera), Wilhelm & Ladd (1985: 217 as Cladonia polycarpoides), Wilhelm & Lampa (1987: 48 as Cladonia polycarpoides)
- Cladonia subtenuis (Abb.) Evans - Skorepa (1970: 79), Wilhelm & Ladd (1985: 214 as Cladina subtenuis), Wilhelm & Lampa (1987: 46 as Cladina subtenuis), Czeczuga & Wilhelm (1992: 6 as Cladina subtenuis)
- Cladonia uncialis (L.) Weber ex F. H. Wigg. - Skorepa (1970: 79), Wilhelm & Ladd (1985: 218)
- Coccocarpia palmicola (Tuck.) Vain. - Skorepa & Snider (1967: 105 as Coccocarpia cronia)
- Collema flaccidum (Ach.) Ach. - Wilhelm & Ladd (1985: 218)
- Collema furfuraceum (Schaer.) Du Rietz - Wilhelm & Ladd (1985: 218)
- Collema subflaccidum Degel. - Wilhelm & Ladd (1985: 218)
- Chaenotheca furfuracea (L.) Tibell - McKnight et al. (1987: 28 as Coniocybe furfuracea)
- Crespoa crozalsiana (B. de Lesd. ex Harm.) Lendemer & Hodkinson - Wilson & Methven (1997: 450 as Canoparmelia crozalsiana)
- Cyphelium tigillare (Ach.) Ach. - Skorepa (1970: 79)
- Cystocoleus ebeneus (Dillwyn) Thwaites - McKnight et al. (1987: 28)
- Dermatocarpon americanum Vain. - Heiðmarsson (2003: 466)
- Dermatocarpon miniatum (L.) Mann - Skorepa (1970: 79), Stotler (1976: 9), Wilhelm & Ladd (1985: 219), Wilhelm & Lampa (1987: 48), Basinger et al. (1996: 332)
- Dibaeis absoluta (Tuck.) Kalb & Gierl - Skorepa & Snider (1967: 105 as Baeomyces absolutus)
- Dimelaena oreina (Ach.) Norman - Skorepa (1970: 80 as Rinodina oreina)
- Dirinaria frostii (Tuck.) Hale & W. L. Culb. - Wilhelm & Ladd (1985: 219)
- Enchylium conglomeratum Hoffm. - Wilhelm & Ladd (1985: 218 as Collema conglomeratum)
- Endocarpon pusillum Hedw. - Skorepa (1970: 79), Basinger et al. (1996: 332)
- Evernia mesomorpha Nyl. - McKnight et al. (1987: 28), Wilhelm & Lampa (1987: 49)
- Flavoparmelia baltimorensis (Gyeln. & Fóriss) Hale - Wilhelm & Ladd (1985: 228 as Pseudoparmelia baltimorensis), Czeczuga & Wilhelm (1992: 6)
- Flavoparmelia caperata (L.) Hale - Skorepa (1970: 79 as Parmelia caperata), Wilhelm & Ladd (1985: 228), Wilhelm & Lampa (1987: 49), Muir & McCune (1988: 365), Czeczuga & Wilhelm (1992: 6), Wilson & Methven (1997: 450)
- Flavopunctelia flaventior (Stirt.) Hale - McKnight et al. (1987: 29), Wilhelm & Lampa (1987: 49), Muir & McCune (1988: 365)
- Flavopunctelia soredica (Nyl.) Hale - McKnight et al. (1987: 29), Wilhelm & Lampa (1987: 49)
- Graphis scripta (L.) Ach. - Skorepa (1970: 79), Wilson & Methven (1997: 450)
- Gyalolechia flavovirescens (Wulf.) Søchting, Frödén & Arup - Skorepa (1970: 78 as Caloplaca flavovirescens), Basinger et al. (1996: 332 as Caloplaca flavovirescens)
- Heppia lutosa (Ach.) Nyl. - Wilhelm & Lampa (1987: 49)
- Heterodermia albicans (Pers.) Swinscow & Krog - Wilhelm & Ladd (1985: 220), Wilson & Methven (1997: 450)
- Heterodermia granulifera (Ach.) W. L. Culb. - Wilson & Methven (1997: 450)
- Heterodermia obscurata (Nyl.) Trev. - Wilhelm & Ladd (1985: 220), Muir & McCune (1988: 365)
- Heterodermia speciosa (Wulf.) Trev. - Skorepa (1970: 79 as Heterodermia tremulans), Wilhelm & Ladd (1985: 220)
- Hyperphyscia adglutinata (Sm.) A. L. Sm. - Skorepa (1970: 80 as Physcia elaeina), Wilhelm & Lampa (1987: 49)
- Hyperphyscia syncolla (Tuck. ex Nyl.) Kalb - Skorepa (1970: 80), Wilhelm & Ladd (1985: 227 as Physciopsis syncolla), Wilson & Methven (1997: 450)
- Hypocenomyce scalaris (Ach.) M. Choisy - McKnight et al. (1987: 28)
- Hypogymnia physodes (L.) W. Wats. - Wilhelm & Lampa (1987: 49)
- Hypotrachyna livida (Taylor) Hale - Wilhelm & Ladd (1985: 220), Muir & McCune (1988: 365), Wilson & Methven (1997: 450)
- Hypotrachyna pustulifera (Hale) Skorepa - McKnight et al. (1987: 29)
- Lasallia papulosa (Ach.) Llano - Cohen (2002: 521)
- Lecanora filamentosa (Stirt.) Elix & Palice - Skorepa (1970: 79 as Lecanora symmicta)
- Lecanora hybocarpa (Tuck.) Brodo - Wilson & Methven (1997: 450)
- Lecanora hypoptoides (Nyl.) Nyl. - Skorepa & Snider (1967: 105)
- Lecanora minutella Nyl. - Skorepa & Snider (1967: 105)
- Lecanora strobilina (Spreng.) Kieff. - Wilson & Methven (1997: 450)
- Lepra hypothamnolica (Dibben) Lendemer & R. C. Harris - Dibben (1980: 57 as Pertusaria hypothamnolica Type)
- Lepraria finkii (B. de Lesd.) R. C. Harris - McKnight et al. (1987: 29 as Lepraria finkii), McKnight et al. (1987: 30 erroneously as Lepraria lobificans)
- Lepraria membranacea (Dicks.) Vain. - Stotler (1976: 9)
- Leptogium austroamericanum (Malme) C. W. Dodge - Wilhelm & Ladd (1985: 221)
- Leptogium cyanescens (Rabenh.) Körb. - Wilhelm & Ladd (1985: 221), Wilhelm & Lampa (1987: 50)
- Leptogium hirsutum Sierk - Sierk (1964: 267 Type)
- Leptogium milligranum Sierk - Wilhelm & Ladd (1985: 221)
- Leptorhaphis atomaria (Ach.) Szat. - McKnight et al. (1987: 31)
- Melanelixia subaurifera (Nyl.) O. Blanco et al. - Wilhelm & Lampa (1987: 50 as Parmelia subaurifera)
- Myelochroa aurulenta (Tuck.) Elix & Hale - Skorepa (1970: 79 as Parmelia aurulenta), Wilhelm & Ladd (1985: 222 as Parmelina aurulenta), Wilhelm & Lampa (1987: 50 as Parmelina aurulenta), Muir & McCune (1988: 365 as Parmelina aurulenta), Wilson & Methven (1997: 450)
- Myelochroa galbina (Ach.) Elix & Hale - Wilhelm & Ladd (1985: 222 as Parmelina galbina), Muir & McCune (1988: 365 as Parmelina galbina), Wilson & Methven (1997: 450)
- Myelochroa obsessa (Ach.) Elix & Hale - Wilhelm & Ladd (1985: 223 as Parmelina obsessa)
- Myriolecis dispersa (Pers.) Sliwa, Zhao Xin & Lumbsch - Skorepa (1970: 79 as Lecanora dispersa)
- Nadvornikia sorediata R. C. Harris - Ladd et al. (1994: 135)
- Opegrapha vulgata (Ach.) Ach. - Wilson & Methven (1997: 450)
- Parmelia squarrosa Hale - Wilhelm & Lampa (1987: 50)
- Parmelia sulcata Taylor - Skorepa (1970: 79 as Parmelia sulcata), Wilhelm & Lampa (1987: 50), Czeczuga & Wilhelm (1992: 6)
- Parmotrema cetratum (Ach.) Hale - Muir & McCune (1988: 365)
- Parmotrema dilatatum (Vain.) Hale - Skorepa & Snider (1967: 105 as Parmelia dilatata)
- Parmotrema eurysacum (Hue) Hale - Wilhelm & Ladd (1985: 223)
- Parmotrema hypotropum (Nyl.) Hale - Wilhelm & Ladd (1985: 223), Muir & McCune (1988: 365), Wilson & Methven (1997: 450)
- Parmotrema madagascariaceum (Hue) Hale - Skorepa & Snider (1967: 105 as Parmelia madagascariacea), Stotler (1976: 9 as Parmelia madagascariacea), Wilhelm & Ladd (1985: 223)
- Parmotrema michauxianum (Zahlbr.) Hale - Wilhelm & Ladd (1985: 224)
- Parmotrema reticulatum (Taylor) M. Choisy - Wilhelm & Ladd (1985: 224), Wilhelm & Lampa (1987: 50), Wilson & Methven (1997: 450 as Rimelia reticulatum)
- Parmotrema tinctorum (Delise ex Nyl.) Hale - Skorepa & Snider (1967: 105)
- Peltigera canina (L.) Willd. - Skorepa (1970: 79), Stotler (1976: 9), Wilhelm & Ladd (1985: 224), Wilhelm & Lampa (1987: 51), Czeczuga & Wilhelm (1992: 6)
- Peltigera polydactylon (Neck.) Hoffm. - Wilhelm & Ladd (1985: 224)
- Phaeophyscia adiastola (Essl.) Essl. - Wilhelm & Ladd (1985: 225), Wilhelm & Lampa (1987: 51), Basinger et al. (1996: 332)
- Phaeophyscia cernohorskyi (Nadv.) Essl. - Wilhelm & Ladd (1985: 225), Wilhelm & Lampa (1987: 51), Muir & McCune (1988: 365), Wilson & Methven (1997: 450)
- Phaeophyscia ciliata (Hoffm.) DR. - Skorepa (1970: 80 as Physcia ciliata), Wilhelm & Lampa (1987: 51), Wilson & Methven (1997: 450)
- Phaeophyscia hirtella Essl. - Muir & McCune (1988: 365), Wilson & Methven (1997: 450)
- Phaeophyscia imbricata (Vain.) Essl. - Wilhelm & Ladd (1985: 225), Wilhelm & Lampa (1987: 51)
- Phaeophyscia leana (Tuck.) Essl. - Skorepa (1984: 257)
- Phaeophyscia orbicularis (Neck.) Moberg - Skorepa (1970: 80 as Physcia orbicularis), Wilson & Methven (1997: 450), Wilhelm & Lampa (1987: 51)
- Phaeophyscia pusilloides (Zahlbr.) Essl. - Wilhelm & Ladd (1985: 225), Wilhelm & Lampa (1987: 51), Muir & McCune (1988: 365), Wilson & Methven (1997: 450)
- Phaeophyscia rubropulchra (Degel.) Moberg - Wilhelm & Ladd (1985: 226), Wilhelm & Lampa (1987: 52), Muir & McCune (1988: 365), Czeczuga & Wilhelm (1992: 6), Wilson & Methven (1997: 450)
- Phaeophyscia squarrosa Müll. Arg. - Skorepa (1970: 80 erroneously as Physcia lacinulata)
- Physcia adscendens (Th. Fr.) H. Oliv. - Wilhelm & Lampa (1987: 52), Czeczuga & Wilhelm (1992: 6)
- Physcia aipolia (Ehrh.) Hampe - Skorepa (1970: 79), Wilhelm & Ladd (1985: 226), Muir & McCune (1988: 365)
- Physcia americana - Skorepa (1970: 80 erroneously as Physcia tribacoides), Wilhelm & Ladd (1985: 226), Wilhelm & Lampa (1987: 52), Muir & McCune (1988: 365), Wilson & Methven (1997: 450)
- Physcia millegrana Degel. - Skorepa (1970: 80), Wilhelm & Ladd (1985: 227), Wilhelm & Lampa (1987: 52), Muir & McCune (1988: 365), Czeczuga & Wilhelm (1992: 6), Wilson & Methven (1997: 450)
- Physcia phaea (Tuck.) Thoms. - Wilhelm & Ladd (1985: 227)
- Physcia stellaris (L.) Nyl. - Skorepa (1970: 80), Wilhelm & Ladd (1985: 227), Wilhelm & Lampa (1987: 52), Muir & McCune (1988: 365), Czeczuga & Wilhelm (1992: 6)
- Physcia subtilis Degel. - Wilhelm & Ladd (1985: 227)
- Physciella chloantha (Ach.) Essl. - Wilhelm & Ladd (1985: 226 as Physcia chloantha), Wilhelm & Lampa (1987: 52)
- Physconia detersa (Nyl.) Poelt - Wilhelm & Ladd (1985: 227), Wilhelm & Lampa (1987: 52), Muir & McCune (1988: 365), Wilson & Methven (1997: 450)
- Physconia leucoleiptes (Tuck.) Essl. - Wilson & Methven (1997: 450 as Physconia kurokawae)
- Placidium arboreum (Schwein. ex E. Michener) Lendemer - Wilhelm & Ladd (1985: 219 as Dermatocarpon tuckermanii)
- Placidium lachneum (Ach.) B. de Lesd. - Wilhelm & Ladd (1985: 219 as Dermatocarpon lachneum)
- Placynthiella icmalea (Ach.) Coppins & P. James - McKnight et al. (1987: 31)
- Placynthiella uliginosa (Schrad.) Coppins & P. James - Skorepa (1970: 79 as Lecidea uliginosa)
- Placynthium nigrum (Huds.) S. Gray - Skorepa (1970: 80), Wilhelm & Ladd (1985: 228), Wilhelm & Lampa (1987: 53)
- Polycauliona candelaria (L.) Frödén, Arup, & Søchting - Wilhelm & Ladd (1985: 231 as Xanthoria candelaria), Wilhelm & Lampa (1987: 53 as Xanthoria candelaria)
- Polycauliona polycarpa (Hoffm.) Frödén, Arup, & Søchting - Wilhelm & Lampa (1987: 53 as Xanthoria polycarpa)
- Polysporina simplex (Taylor) Vezda - Skorepa (1970: 80 as Sarcogyne simplex)
- Porina salicina Müll. Arg. - Wilson & Methven (1997: 450)
- Protoparmeliopsis gyrophorica (Lendemer) S. Y. Kondr. - Knudsen & Lendemer (2009: 23 as Lecanora gyrophorica)
- Protoparmeliopsis muralis (Schreb.) M. Choisy - Wilhelm & Ladd (1985: 220 as Lecanora muralis), Wilhelm & Lampa (1987: 50 as Lecanora muralis)
- Psora russellii (Tuck.) A. Schneider - Skorepa (1970: 79 as Lecidea russellii)
- Psorotichia schaereri (A. Massal.) Arnold - Basinger et al. (1996: 332)
- Punctelia bolliana (Müll. Arg.) Krog - Skorepa (1970: 79 as Parmelia bolliana), Wilhelm & Lampa (1987: 53), Czeczuga & Wilhelm (1992: 6)
- Punctelia hypoleucites (Nyl.) Krog - Skorepa (1970: 79 as Parmelia hypoleucites), Wilhelm & Ladd (1985: 222 as Parmelia hypoleucites)
- Punctelia missouriensis G. Wilh. & Ladd - Wilson & Methven (1997: 450)
- Punctelia perreticulata (Räsänen) G. Wilh. & Ladd - Czeczuga & Wilhelm (1992: 6)
- Punctelia rudecta (Ach.) Krog - Skorepa (1970: 79 as Parmelia rudecta), Wilhelm & Ladd (1985: 222 as Parmelia rudecta), Wilhelm & Lampa (1987: 53), Muir & McCune (1988: 365), Czeczuga & Wilhelm (1992: 6), Wilson & Methven (1997: 450)
- Pyrenocollema prospersella (Nyl.) R. C. Harris - Nylander (1890: 108 as Verrucaria prospersella Type in Helsinki, Finland H-NYL), Zahlbruckner (1921: 288 as Arthopyrenia prospersella), Tucker & Harris (1980: 13)
- Pyrenodesmia variabilis (Pers.) A. Massal. - Basinger et al. (1996: 332 as Caloplaca variabilis)
- Pyxine caesiopruinosa (Nyl.) Imshaugh - Wilhelm & Ladd (1985: 228), Wilhelm & Lampa (1987: 53), Muir & McCune (1988: 365)
- Pyxine sorediata (Ach.) Mont. - Skorepa (1970: 80), Wilhelm & Ladd (1985: 229), Wilhelm & Lampa (1987: 53), Muir & McCune (1988: 365), Wilson & Methven (1997: 450)
- Pyxine subcinerea Stirton - Wilson & Methven (1997: 450)
- Ramalina fastigiata (Pers.) Ach. - Skorepa & Snider (1967: 105)
- Ramalina intermedia Nyl. - Skorepa & Snider (1967: 105), Wilhelm & Ladd (1985: 229)
- Ramalina unifolia J. W. Thomson - Wilson & Methven (1997: 450)
- Rhizoplaca chrysoleuca (Sm.) Zopf - Skorepa (1970: 79 as Lecanora rubina)
- Rinodina ascociscana (Tuck.) Tuck. - Wilson & Methven (1997: 450)
- Rinodina destituta (Nyl.) A. Zahlbr. - Nylander (1891: 41 Type in Helsinki, Finland H-NYL 10210), Sheard (2010: 82)
- Rinodina oxydata (A. Massal.) A. Massal. - Basinger et al. (1996: 332)
- Rinodina subminuta H. Magn. - Wilson & Methven (1997: 450)
- Rufoplaca arenaria (Pers.) Arup, Søchting & Frödén - McKnight et al. (1987: 26 as Caloplaca arenaria)
- Sarcogyne similis H. Magn. - Poelt & Vezda (1974: 52)
- Scoliciospora chlorococcum (Stenh.) Vezda - Wilson & Methven (1997: 450)
- Scytinium dactylinum (Tuck.) Otálora, P. M. Jørg. & Wedin - Wilhelm & Ladd (1985: 221 as Leptogium dactylinum), Wilhelm & Lampa (1987: 50 as Leptogium dactylinum)
- Scytinium lichenoides (L.) Otálora, P. M. Jørg. & Wedin - Stotler (1976: 9 as Leptogium lichenoides), Wilhelm & Ladd (1985: 221 as Leptogium lichenoides)
- Scytinium subtile (Schrader) Otálora, P. M. Jørg. & Wedin - Skorepa & Snider (1967: 105 as Leptogium minutissimum)
- Scytinium tenuissimum (Dickson) Otálora, P. M. Jørg. & Wedin - Wilhelm & Ladd (1985: 221 as Leptogium tenuissimum)
- Trapeliopsis flexuosa (Fr.) Coppins & P. James - Skorepa (1970: 79 as Lecidea flexuosa)
- Usnea mutabilis Stirt. - Skorepa & Snider (1967: 105), Stotler (1976: 9), Wilhelm & Ladd (1985: 229), Wilson & Methven (1997: 450)
- Usnea strigosa (Ach.) Eat. subsp. strigosa - Wilhelm & Ladd (1985: 229), Wilhelm & Lampa (1987: 53)
- Variolaria pustulata (Brodo & W. L. Culb.) Lendemer, Hodkinson & R. C. Harris - Wilson & Methven (1997: 450 as Loxospora pustulata)
- Verrucaria calkinsiana Serv. - McKnight et al. (1987: 31)
- Xanthocarpia feracissima (H. Magn.) Frödén, Arup & Søchting - McKnight et al. (1987: 26 as Caloplaca feracissima)
- Xanthomendoza fallax (Hepp) Söchting, Kärnefelt & S. Kondr. - Skorepa (1970: 80 as Xanthoria fallax), Wilhelm & Ladd (1985: 231 as Xanthoria fallax), Wilhelm & Lampa (1987: 53 as Xanthoria fallax), Muir & McCune (1988: 365 as Xanthoira fallax)
- Xanthoparmelia conspersa (Ehrh. ex Ach.) Hale - Stotler (1976: 9), Wilhelm & Ladd (1985: 229)
- Xanthoparmelia cumberlandia (Gyeln.) Hale - Wilhelm & Ladd (1985: 230)
- Xanthoparmelia dierythra (Hale) Hale - Skorepa (1970: 79 as Parmelia dierythra)
- Xanthoparmelia hypofusca (Gyeln.) Hodkinson & Lendemer - Wilhelm & Ladd (1985: 230 erroneously as Xanthoparmelia tasmanica)
- Xanthoparmelia plittii (Gyeln.) Hale - Wilhelm & Ladd (1985: 230)
- Xanthoparmelia stenophylla (Ach.) Ahti & D. Hawksw. - Czeczuga & Wilhelm (1992: 6 as Xanthoparmelia somloensis)