Books by John Walter Thomson
Lichens of Wisconsin
Lichens of Wisconsin
American Arctic lichens
Lichens of the Alaskan arctic
Lichens of the Alaskan arctic slope
Letharia californica is Lethar
Letharia californica is Letharia columbiana (Lichenes)
Haematomma lapponicum Räs. in
Haematomma lapponicum Räs. in North America
Notes on Rhizocarpon in the Ar
Notes on Rhizocarpon in the Arctic
Must the name Cladonia sylvati
Must the name Cladonia sylvatica (L.) Hoffm. be abandoned?
Modern species concepts
Modern species concepts
The lichen genus Physcia in No
The lichen genus Physcia in North America
Agrestia cyphellata, a new gen
Agrestia cyphellata, a new genus and species of lichen in the Usneaceae
Norman C. Fassett, 1900-1954
Norman C. Fassett, 1900-1954
Peltigera pulverulenta (Tayl.)
Peltigera pulverulenta (Tayl.) NYL. takes precedence over Peltigera scabrosa T. fr. and becomes of considerable phytogeographic interest
Lichens of the 1951 foray to t
Lichens of the 1951 foray to the north shore of Lake Superior
Lichens of Arctic America
Lichens of Arctic America
Some additional records of lic
Some additional records of lichens from Alaska collected by Walter J. Eyerdam
The species of Peltigera of No
The species of Peltigera of North America north of Mexico
The Wisconsin species of Pelti
The Wisconsin species of Peltigera
The past and present vegetatio
The past and present vegetation of the Brule River watershed