274 PROCEEDINGS OF THE AMERICAN ACADEMY 



at length disciform, with a reflexed margin. Fr. Lichenogr. p. 404. 

 Turn. 4* Borr. Lich. Brit. p. 115. Icon, E. Bot. i. 114. 



Rocks and on the earth in alpine districts. Canada, fertile, Herh. 

 Hook. ! Arctic America ! Rich. 



2. S. globiferum (L.), DC. Th. fruticulose, somewhat terete, with 

 erectish, fibrillose-ramulose branches, chestnut ; apoth. globose, with 

 an inflexed margin. DC. Fl. Fr. Lichen globiferus, L. S. Cor allot- 

 des, Fers. Fr. Lichenogr. p. 405. Turn. ^ Borr. Lich. Brit. p. 1 10 

 {excl. /?). Icon, E. Bot. t. 115. 



On the earth in alpine and subalpine districts ; and descending, 

 northward. White Mountains, fertile. Eastport, Maine, Russell ! 

 Newfoundland, Pylaie. Arctic America, Hook. ! 



3. S. fragile, Pers. Th. densely caespitose, fruticulose, dichoto- 

 mously branched, somewhat cinereous ; branches terete, fastigiate, na- 

 ked; apoth. turbinate-globose, with an inflexed margin. Fr. Lichenogr. 

 p. 405. SchcBr. ! Spicil. p. 7. Icon, E. Bot. t. 2474. 



Alpine rocks. White Mountains, fertile. Northward to Arctic 

 America, Hook. Rarely somewhat compressed. 



Tribe II. ENDOCARPACE^, Fr. 



XXIV. ENDOCARPON, Hed 



w. 



Apothecia included in the thallus, globose ; a membranaceous, thin, 

 pale thalline exciple inclosing a gelatinous, colored, deliquescent nu- 

 cleus ; ostioles somewhat prominent. Thallus horizontal, cartilagine- 

 ous-foliaceous, subpeltate. 



1. E. miniatum, Ach. Thallus cartilagineous-coriaceous, rigid, pale- 

 yellowish-fulvescent, becoming cinerascent and glaucous-pruinose ; on 

 the under side naked, at length somewhat rugose, fulvescent, at length 

 black ; ostioles somewhat prominent, fuscous-nigrescent. Fr. Lichen- 

 ogr. p. 408. — /5. complicatum, Schser. ; Cccspitose-polyphyllous ; lobes 

 ascendant, imbricate and complicate, cinereous ; on the under side 

 dark-fuscous. Schcer. ! Spicil. p. 59. Fr. I. c. 



Rocks. New York, Halsey. Pennsylvania, Muhl. Arctic Ameri- 

 ca, Rich. — 15, near water. New England. New York, Halsey. Fries, 



