82 EXPLANATION OF PLATES, 



Plate V. 



Eig. 1. Endocarpon sinopicum, AcH. (p. 16.) 



A. Vertical section of thallus and apothecium. b. Sporidia. a. 

 Cortical layer, h. Green layer, c. Medullary layer, d. 

 Apothecium. e. Perithecium. /. Nucleus, g. Section of 

 nucleus, showing position of asci and paraphyses. 



2. Endocarpon sorediatum, Hook. (p. 18.) 



A. Vertical section of thallus and apothecium. b. Sporidia. 

 a. Cortical layer, b. Green layer, c. Medullary layer. 

 d. Apothecium. e. Perithecium. /. Nucleus, g. Ultimate 

 spores or granular contents of the sporidia. 



3. Endocarpon pallidum, AcH. (p. 19.) 



A. Vertical section of thallus and apothecium. b. Sporidium. 

 a. Cortical layer, h. Green layer, c. Medullary layer. 

 d. Apothecium. e. Perithecium. /. Nucleus, g. Granular 

 contents of sporidium. 



Plate VI. 



Fig. 1. Vermcaria litldna, Ach. from an authentic spe- 

 cimen from Swartz in herb. Borrer. (p. 19.) 



A. Vertical section of thallus and apothecium. b. Sporidia. 



2. Endocarpon lithinum. Llyn Bodlyn specimen 



in herb. Salwey. (p. 20.) 



A. Vertical section of thallus and apothecium. b. Sporidia. 



3. Endocarpon Jlssuni. (p. 20.) 



A. Vertical section of thallus and apothecium. b. Sporidium. 

 c. Spores included in sporidium. d. Apothecium in profile. 

 E. Apothecium as seen from above. 



4. Endocarpon isidioides. (p. 20.) 



A. Vertical section of thallus and apothecium. b. Sporidia. 



