ILLUSTRATIONS 



PLATES TAm 



PLATE 



Verrucaria viridula (Schrad.) Ach. and Staurothele clopima (Wahl.) 



T. Fries 1 



Pyrenula farrea (Ach.) Branth & Rostr. and Coniocybe pallida (Pers.) 



E. Fries 2 



Arthonia radiata (Pers.) Ach. and Graphis scripta (L.) Ach. ... 3 



Conotrema urceolatum (Ach.) Tuck 4 



Ephebe lanata (L.) Vainio 5 



Ephebe lanata (L.) Vainio and Synechoblastus nigrescens (Huds.) Trev. 6 



Collema pulposum (Bernh.) Ach 7 



Leptogium tremelloides (L.) S. F. Gray 8 



Pannaria leucosticta Tuck 



Sticta pulmonaria (L.) Bir 10 



Sticta verrucosa (Huds.) Fink . H 



Solorina saccata (L.) Ach. and Peltigera venosa (L.) Baumg. ... 12 



Peltigera aphthosa (L.) Willd 13 



Lecidea melancheima Tuck 14 



Lecidea pantherina (Hoffm.) Ach. and Lecidea granulosa (Hoffm.) Ach. 15 



Lecidea speirea Ach. and Lecidea albocaerulescens (Wulf.) Ach. . . 16 



Psora Russellii (Tuck.) Schneid 17 



Mycoblastus sanguinarius (L.) Norm 18 



Rhizocarpon concentricum (Davies) Beltr. and Rhizocarpon geographi- 



cum (L.) Lam. & DC 19 



Baeomyces rufus (Huds.) Rebent. and Cladonia fimbriata coniocraea 



(Floerke) Vainio 20 



Cladonia pyxidata chlorophaea (Spreng.) Floerke 21 



Cladonia bellidiflora (Ach.) Schaer. and Cladonia deformis (L.) Hoffm. 22 



Cladonia verticillata Hoffm 23 



Stereocaulon coralloides E. Fries 24 



Gyrophora hyper borea Ach 25 



Gyrophora dillenii (Tuck.) Mull. Arg 26 



Umbilicaria pustulata (L.) Hoffm. and Pertusaria velata (Turn.) Nyl. 27 



An Acarospora 28 



Lecanora varia (Hoffm.) Ach. and Lecanora frustulosa (Dicks.) Ach. 29 



Lecanora versicolor (Pers.) Ach 30 



