OF ARTS AND SCIENCES. 245 



17. C. Despreaiixii, Bory ms, Th. evanescent ; podetia elongated, 

 slender, cartilagineous-corticate, the epidermis separating below into 

 bluish-white squamules, and becoming above finely granulate (not pul- 

 verulent), pale sulphureous, becoming bluish-fuscescent at the base ; 

 scyphi narrow, proliferous-radiate, or passing into and obliterated in 

 sterilescent branchlets ; apoth. minute, pale-flesh-colored fuscescent. 

 Cenomyce Despreauxii, Bory, fide schedul. in herb. Berol. 



On the earth in alpine districts. White Mountains. Newfoundland, 

 Bory ! 



IS. C. amaurocraa, Floerk. Th. crustaceous, evanescent ; pode- 

 tia elongated, slender, polished, somewhat curved-decumbent, pale- 

 straw-colored ; apices fuscous-black, those of the sterile podetia subu- 

 late, variously branched, of the scyphiferous ones irregularly prolifer- 

 ous-branched ; scyphi narrow, oblique, margin dentate-radiate ; apoth. 

 pale-flesh-colored fuscescent. Floerk. ! Clad. p. 1 19. Cenomyce oxy- 

 ceras., Ach. Syn. 



On the earth in alpine districts. White Mountains, very luxuriant 

 and fertile. Greenland, Floerke, and elsewhere in Arctic America, 

 R.ch. 



19. C. Botrytis, HofFm. Th. squamulose ; podetia cylindrical, car- 

 tilagineous-corticate, verruculose, ochroleucous ; somewhat divided into 

 subfastigiate branches ; apoth. pale-flesh-colored and pallescent. Fr. 

 Lichenogr. p. 234. 



On the earth, and decaying logs. New York, Halsey. 



20. C. uncialis, Fr. Th. crustaceous, evanescent ; podetia fruticu- 

 lose, dichotomous, smooth, greenish-straw-colored ; axils subperforate ; 

 sterile apices erect, blackish, fertile ones digitate-radiate ; apoth. at first 

 pale-flesh-colored, fuscescent. Fr. Lichenogr. p. 244. Ach. Sy7i. p. 

 276. C. slellata, Schcer. ! Spicil. \, p. 42 {excl. <5). Floerk. ! Clad, 

 p. 171. — a. humilior ; shorter, more slender, and smooth, somewhat 

 attenuate, the axils often imperforate. Fr. I. c. Cenomyce uncialis, 

 Ach. Lichenogr. Lichen uncialis, Auct. — /5. adunca, Ach.; taller, 

 somewhat turgid, incrassated above ; branches short, stellate-patent, the 

 fertile ones cymose ; axils gaping. Ach. I. c. p. 277. Fr. I. c. (a.) 

 C. hiuncialis, Hoffm. C. adunca, Ach. Lichenogr. — /. turgescens, 

 Schser. ; soflish, turgid-incrassated, the branches subtruncate, fasligi- 

 ate. Schcer. Spicil. 1, p. 308. Fr. I. c. 



On the earth: a, sands, and sterile pine woods (fertile?) ; — ,.?, in 



