AND BRITISH AMERICA. 91 



scattered, sessile, blackish-fuscous, margin entire. Hook. Br. Fl. p. 2, 

 211. Lichen granulatus, Huds. (e Hook.). Colhma furvtim, Ach. 

 Exs. Schar. ! Lich. Heh>. 413, 414. Icon, E. Bol. t. 1757. 



Stones and trunks. New England. New York, Hdlsey. Pennsyl- 

 vania ? Muhl. 



•• Thallus thin, foliaceous, gelatinous-membranaceous, lobed princi- 

 pally at the circumference. 



7. C. melcmum, Ach. Th. foliaceous, somewhat stellate, blackish- 

 green, the lobes elongated, radiant, multifid, with elevated, waved and 

 crisped, crenate margins ; apoth. submarginal, somewhat plane, at length 

 rufescent, with a subgranulate margin. Ach. ! Syn. p. 315. — /S. jaco- 

 haifolium, Ach. ; lacinise narrow, strict, lacerate-pinnatifid ; apoth. mar- 

 ginal, with an entire margin. Ach. I. c. Exs. Schar. ! Lich. Helv. 422. 



Rocks among mosses and trunks. New England. 



8. C. palmatum, Ach. Th. csspitose-pulvinate, brownish-green, of 

 crowded, erectish, palmate-divided, somewhat linear and terete laciniae ; 

 apoth. rufous-fuscous. Ach. Syn. p. 319. 



On the earth, and trunks. Pennsylvania, Muhl. 



9. C. nigrescens, Ach. Th. somewhat monophyllous, membrana- 

 ceous, expanded, round-lobed, rugose-plicate, olivaceous-nigrescent; 

 costate-lacunose beneath ; apoth. (minute) central, crowded, at length 

 convex, rufous-fuscous, with a very entire margin. Ach. Sy/i. p. 321. 

 Hook. Br. Fl 2, p. 211. Exs. Schar. ! Lich. Heh. 410. 



Eocks and trunks. New England. New York, Halsey. Pennsyl- 

 vania, Muhl. 



10. C. Jlaccidum, Ach. Th. foliaceous, membranaceous, smooth, 

 flaccid, blackish-green ; lobes somewhat ascending, rounded, rather en- 

 tire, undulate-plicate ; apoth. scattered (small), somewhat plane, rufous. 

 Ach. Syn. p. 322. Hook. Br. Fl. 2, p. 211. Exs. Schcer. ! Lich. Helv. 

 412. 



Rocks and trunks. New England. 



11. C. tUTueforme, Ach. Th. foliaceous, membranaceous, somewhat 

 rugose, blackish-green, besprinkled with fuliginous powder; lobes ob- 

 long, deeply cut, sinuate-laciniate, obtuse, flexuous, crisped, subcrenate ; 

 apoth. scattered, somewhat plane, fuscous, with a very entire margin. 

 Ach. Syn. p. 322. 



