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Lichens Index 11:
Physciella to Pseudothelomma

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Each name links to a page displaying 1 to 35 images. Most of the lichens in the photos are well-identified from voucher specimens, but I have included some whose identity is uncertain; almost all of these are also backed up by voucher specimens. Where something is identified only to a species "group", or is cfr. or sensu lato, I have placed it on the page with that species.

Physciella chloantha
Physciella melanchra

Physconia americana

Physconia californica
Physconia detersa
Physconia elegantula
Physconia enteroxantha
Physconia isidiigera
Physconia muscigena
Physconia perisidiosa

Pilophorus acicularis
Pilophorus cereolus
Pilophorus clavatus
Pilophorus nigricaulis
Pilophorus robustus

Placidium acarosporoides

Placidium arboreum
Placidium chilense
Placidium lachneum
for Placidium lacinulatum go to Clavascidium lacinulatum
Placidium pilosellum
Placidium squamulosum

Placopsis gelida
Placopsis lambii
Placopsis roseonigra
Placopsis (unidentified species)

Placopyrenium caeruleopulvinum

Placynthiella oligotropha
Placynthiella uliginosa

Placynthium asperellum
Placynthium flabellosum cfr.
Placynthium nigrum

Platismatia glauca
Platismatia herrei
Platismatia lacunosa
Platismatia norvegica
Platismatia stenophylla
Platismatia tuckermanii


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Pilophorus acicularis






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Polycauliona ignea
(& Acarospora sp., prob. A. socialis)


Platygramme caesiopruinosa

Platythecium grammatis

Pleopsidium chlorophanum
Pleopsidium flavum

Polycauliona bolacina
Polycauliona brattiae
Polycauliona brattiae with Polycauliona rosei
Polycauliona candelaria
Polycauliona coralloides
Polycauliona flavogranulosa
Polycauliona ignea
Polycauliona impolita
Polycauliona inconspecta
Polycauliona ludificans
Polycauliona luteominia
Polycauliona pollinarioides
Polycauliona polycarpa
Polycauliona rosei
Polycauliona stellata
Polycauliona verruculifera

Polychidium contortum (see Leptogidium contortum)
Polychidium dendriscum cfr. (see Leptogidium dendriscum cfr.)
Polychidium muscicola
Polychidium (unidentified species)

Polysporina cyclocarpa

Polysporina simplex

Polysporina urceolata

Porina byssophila

Porina heterospora

Porpidia albocaerulescens
Porpidia carlottiana
Porpidia contraponenda cfr.
Porpidia crustulata
Porpidia diversa (see Porpidia contraponenda)
Porpidia flavicunda
Porpidia flavocaerulescens (see Porpidia flavicunda)
Porpidia macrocarpa
Porpidia cfr. speirea
Porpidia subsimplex
Porpidia thomsonii
Porpidia tuberculosa
Porpidia (unidentified species)

Protoblastenia rupestris

Protomicarea limosa

Protopannaria pezizoides

Protoparmelia badia

Protoparmeliopsis bipruinosa
Protoparmeliopsis garovaglii
Protoparmeliopsis kofae
Protoparmeliopsis muralis
Protoparmeliopsis muralis var. dubyi
Protoparmeliopsis peltata
Protoparmeliopsis pinguis

Pseudephebe minuscula
Pseudephebe pubescens

Pseudevernia cladonia
Pseudevernia consocians
Pseudevernia furfuracea (A European, not North American species)
Pseudevernia intensa

Pseudocyphellaria anomala (see Lobaria anomala)
Pseudocyphellaria anthraspis (see Lobaria anthraspis)
Pseudocyphellaria aurata (see Crocodia aurata)
Pseudocyphellaria crocata (keeping the name for now, but N. American Checklist says, "Misidentifications for North America" )
Pseudocyphellaria hawaiiensis
Pseudocyphellaria perpetua (see Pseudocyphellaria hawaiiensis)
Pseudocyphellaria rainierensis

Pseudoparmelia uleana

Pseudothelomma occidentale
Pseudothelomma ocellatum

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Porpidia albocaerulescens








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Pseudevernia intensa







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Pseudocyphellaria crocata
(This species is probably a misidentification for North America, and will probably get one or more other names.)






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Pseudothelomma occidentale

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Lichens Index 10: Peltula to Physcia

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Lichens Index 12: Psilolechia to Rhizocarpon