Fig. 1. 

 Fig. 2. 



Fie. 3. P. 



Fig. 4. P 



Fig. 5. 



Fig. 6. 



Fig. 7. 



Fig. 8. 



Solorina saccata, brown 

 Pcltigcra caiiiiia, lea 



brown or gray. 



caiiina, fruiting lobes 



showing progressive 



stages of development. 

 ca)ii)ia, section of spore 



layer. 

 canina. spores. 

 P. horizontalis, fruiting tips. 

 P. polydactyla. under surface 



and fruiting lobes. 

 Algal cells, Protococcus and 



Nostoc. 



Pla 



rE 10 







Fig. 



9. 



er- 









Fig. 



10. 



p 



Peltigera spuria, whitish or 

 pale gray. 



P. spuria var. sorcdiata 

 (P. cruiitpens) . with 

 blue-gray, granular 

 soredia. 



P. spuria var. sorediata, tip. 



P. z'cnosa, gray or brown- 

 ish. 



P. aphfhosa. gray or brown, 

 bright green w hen 

 moist. 

 Fig. 14. P. aphthoso, cephalodia. 



Fig. 11. 

 Fig. 12. 



Fig. 13. 



