PLATE 18 



VERRUCARIACEAE 



(a. Habit; b. Section of perithecium; c. Spores; except as otherwise 



indicated) 



1. Epigloea bactrospora Zuk. 



(Zahlbr. Nat. Pfl. p. 64, after Zukal) 



2. Aspidothelium cinerascens Wain. 



(Id. p. 70) 

 a. Perithecium from above and tlic side 



3. Pyrenidium actinellum Nyl. 



(Id. p. 91, after Crombie) 

 a. Lobes of thallus 



4. Pyrenula nitida (Weig.) Ach. 



(Lind. Flecht. 19:30) 

 a. x5 (Merrill Lich. Exs. no. 12) 



5. Strigula elegans (Fee) Muell. Arg. 



(Zahlbr. lb. p. 89) 



6. Campylothelium puiggari Muell. Arg. 



(Id. p. 85) 



7. Dermatocarpum miniatum (L.) Mann 



(Fink Lich. Minn. p. 243, after Reinke) 



a. xl 



b. x75 



8. Endocarpum pusillum Hedw. 



(Lind. lb. 19:19) 



9. Trypethelium eluteriae Spreng. 



(Zahlbr. lb. p. 83) 

 b. Section of stroma 



10. Pyrenocollema tremclloides Reinke 



(Id. p. 165, after Reinke) 



a. xl 



b. xl30 



11. Verrucaria muralis Ach. 



(Fink Lich. Minn. no. 125) 

 a. xl 



12. Verrucaria dolomitica (Mass.) Koerb. 



(Zahlbr. lb. p. 66) 



c. xlOOO 



13. Verrucaria rupestris Schrad. 



(Id.) 



