J. Holtan-Hartwig

Phycotype pairs in Nephroma, Peltigera and Lobaria in Norway

T. Tønsberg, J. Holtan-Hartwig, 1983 .

The cyanomorph of Ricasolia virens comb. nov. (Lobariaceae, lichenized Ascomycetes)

B. Goffinet, T. Tønsberg, L. Lindblom, 2016 .

The lichen genus Peltigera, exclusive of the P. canina group, in Norway

J. Holtan-Hartwig, 1993 .