43 LICHENES OF THE NORTHERN STATES 4^ 



64. P. vitellina, Ach. Cr. tartareous, granulose-coacervate, dark- 

 reddish-yellow; hypoth. macular, white; apoth. sessile, disk yellow 

 becoming fuscous, margin simple, thin, erect, entire, at length of the 

 same color. Fr. Lichenogr. p. 162. Lecanora, Ach. 



Dead wood and rocks ; New England. Pennsylvania, Muhl. 



65. P. fulva, Schwein. (sub Lecanora). Cr. cartilagineous, chinky 

 and granulate-verrucose, sulphureous or pallescent, upon a blackish 

 hypothallus ; apoth. sessile, disk reddish-orange, immarginate, with a 

 thick, inflected, at length flexuous margin. Lecanora fulva, Schwein. 

 in Hals. Lich. N. Y. I. c. p. 13. Tuckerm. Lick. JV. E. 1. c. 



Trunks; New England. New York, HaZsey. 



66. P. cerina, Ach. Cr. at first contiguous, at length granulate, ci- 

 nereous, upon a bluish-black hypothallus ; apoth. sessile, disk immar- 

 ginate, somewhat wax-colored, with a thin, equal, opake, entire thai- 

 line margin. Fr. Lichenogr. p. 160. Lecanora, Ach. 



Trunks, rocks, and stones ; New England. Pennsylvania, Muhl. 



Subsect IX. Urceolaria, Fr. 



67. P. glaucoma, Ach., Fr. Crust tartareous, contiguous, rimose- 

 areolate, glaucous-white ; hypothallus white ; apoihecia innate, disk 

 pale-flesh-colored, pruinose, at length convex, and becoming blackish, 

 with a very entire, evanescent thalline margin. Fr. Summ. Fl. Scand. 

 P. sordida, Fr. Lichenogr. p. 17S. Lecanora glaucoma, Ach. 



Rocks (especially granite). New York, Halsey. Arctic America, 

 Rich. 



68. P. verrucosa, Ach., Fr. Cr. cartilagineous, verrucose, naked, 

 glaucous-white ; hypoth. white ; disk immersed in the verrucas, con- 

 cave, blackish, subpruinose, the proper margin connate with the conve.x 

 thalline margin. Fr. Lichenogr. p. 186. Icon, Laur. in Slurm^s Fl. 

 t. 21. — a. Urceolaria, Fr. ; normal. Urceolaria verrucosa, Ach. — 

 j8. Perlusaria, Fr. ; verrucse closed, disk prominent like a black osti- 

 ole. Porina glomerala, Ach. 



Incrusting dead mosses and sticks, in alpine districts ; White Moun- 

 tains. 



69. v. calcarea, Ach., Fr. Cr. subcartilagineous, areolate-verru-. 

 cose, glauccscent (often mealy and white) ; disk immersed in the are- 

 olae, from concave becoming plane, blackish, creslous-pruinose, with a 



