AND BRITISH AMERICA. 93 



3. L. Burgessii, Fr. Th. membranaceous, subimbricate, glaucous- 

 fuscescent, somewhat spongy and downy beneath, the lobes rounded, 

 sinuate-laciniate, crisped and minutely lacerate-dentate at the margins ; 

 apolh. depressed ; disk somewhat concave, fuscous, with an elevated, 

 lacerate-dentate or foliose margin. CoUema, Ach. Syn. p. 320. Hook. ! 

 Br. Fl. 2, p. 211. Icon, E. Bot. t. 300. 



Trunks. Mountains of New England. 



Tribe II. EPHEBIDE^. 



III. EPHEBE, Fr. 



Apotbecia formed from the thallus, from concave becoming plane, 

 and at length convex, black, the margin evanescent. Thallus filamen- 

 tous, not gelatinous. 



E. puhescens, Fr. Thallus decumbent, softish, terete, black, the 

 branches entangled, capillaceous ; apothecia of the same color. Fr. 

 Fl. Scan. p. 294. Cornicularia, Ach. — /?. Jibrillosa, Ach. ; thallus 

 obscurely fuscous, smoothish, very delicate, branched, somewhat hir- 

 sute with numerous, flexuous, branched, subclavate fibres. Cornicula- 

 ria puiescens, var. Jibrillosa, Ach. Syn. p. 302. 



Rocks and stones ; — a, in alpine districts. Greenland, Di'ZZ. White 

 Mountains. — /S, North America, Ach. 



