62 



Plate 3 



Fig. 1. Evernia prunastri, greenish or yellow- 

 ish gray. 



Fig. 2. E. prunastri, upper surface showing 

 warty soredia. 



Fig. 3. E. prunastri, under surface showing 

 delicate veining 



Fig. 4. E. furfuracea, white, older parts black- 

 ening. 



Fig. 5. E. furfuracea, tips showing sprouts and 

 granules. 



Fig. 6. E. furfuracea, under surface, showing 

 darkened veins. 



Fig. 7. E. furfuracea, older portion with coral- 

 like growths. 



Fig. 8. E. Cladonia, pale gray. 



Fig. 9. Physcia leucomela, whitish with black 

 hairs. 



Fig. 10. P. leucomela, detail and section show- 

 ing downward curled margin. 



Fig. 11. P. comosa, pale gray with short hairs. 



Fig. 12. P. comosa, showing bell-shaped fruits. 



Fig. 13. P. comosa, spores 2-celled and black- 

 ish. 



