68 LICHENES or THE NORTHERN STATES 



336. Schcsr. Spicil. p. 140. Borr. in Hook. Br. Fl. 2, p. 180. L. 

 corlicola, Ach. Syn. 



Trunks on the coast of New England. New York, Halsey. Penn- 

 sylvania, Muhl. 



20. L. dolosa, Wahl. Cr. somewhat verrucose, greenish-glaucous, 

 oftener leprous and white; apoth. (minute) depressed; exciple cupular, 

 with a very thin margin ; disk very black, nearly naked, often punc- 

 tate-scabrous, cinereous-blackish within. Fr. Lichenogr. p. 337. L. 

 pinicola, Sommerf. Suppl. Fl. Lapp. p. 153. L. pinicola, Borr. in 

 Hook. Br. Fl. 2, p. 116 > Tuckerm. Lich. N. E. I. c. 



Scaly bark of old pines ; New England. 



21. L. mdancheima, Tuckerm. Cr. cartilagineous, areolate-verru- 

 cose, becoming somewhat lobulate, glaucous-white, confused with the 

 hypothallus ; apoth. appressed, somewhat plane, disk equalling the very 

 thin margin, at length convex, scarcely excluding the margin, very 

 black, polished, and shining. 



Trunks ; and very common on rails on the coast of Massachusetts 

 (Ipswich, Mr. Oakes, Lynn, Hingham, &c.), and occurring on dead 

 wood at the White Mountains. Disk sometimes a little pallescent, but 

 the margin always very black. 



22. L. sahuletorum, Fr. Cr. cartilagineous, at first contiguous, be- 

 coming rimose-areolate, granulate and somewhat lobulate, cinerascent 

 or fuscous, confused with the hypothallus ; apoth. produced from the 

 crust, horny ; exciple annular, with an evanescent margin ; disk naked, 

 often fuscescent. Fr. Lichenogr. p. 339. Lichen s. Lecidea muscorum, 

 Auct. quortmd. 



On the earth, decaying wood and mosses, stones, and trees, ascend- 

 ing to alpine districts ; New England. New York, Torrey. Pennsyl- 

 vania, Muhl. Arctic America, Rich. 



23. L. arctica, Sommerf. Granules of the crust cartilagineous, at 

 first discrete, papillseform, persistent, fuscescent-cinereous ; apoth. im- 

 mixed, somewhat immarginate, csesious-pruinose, horny and cinerascent 

 within. Fr. Lichenogr. p. 342. Sommerf. Suppl. Fl. Lapp. p. 156. 



Upon mosses in alpine districts ; White Mountains. 



24. L. milliaria, Fr. Granules of the crust at first discrete, fuscous, 

 and cinEreous-white, often deliquescent and leprous ; apoth. produced 

 among the granules, globose, somewhat immarginate, naked ; exciple 



