198 LECANOKA. 



Incrusting mosses, etc., in alpine districts. Greenland ( VaM), 

 Th. Fries I. c. 1861. Islands of Behring's Straits, Wright. 



35(b). L. glaucomela, Tuckerm. ; thallus cartilagineous, con- 

 tiguous, smooth finally wrinkled ; greenish-glaucescent ; apothecia 

 smallish to middling, sessile, flat ; the rugose-crenulate thalline 

 margin scarcely surpassing the black, sub-marginate disk. 

 Spores (in a single series in strap-shaped thekes) ellipsoid, ^ 

 mic. Gen. Lick. p. 118, note. 



On Abies, and Pinus, California (Bolander), Tuckerman I. c. 



1872. Oregon, Hall. Spores now similarly disposed in L. 



oculata\ of which the present is scarcely more than a sub- 



36. L. verrucosa (Ach.) Laur. ; thallus tartareous, verru- 

 cose ; glaucous-white ; apothecia small, from immersed becom- 

 ing superficial and sub-sessile, concave, and urceolate; the 

 black disk bordered by a thin proper margin hidden more or 

 less by the rounded, inflexed thalline one. Spores roundish- 

 ellipsoid, |^ mic. Th. Fr. Scand. p. 273. Urceolaria, Ach. 



Syn. p. 240. 



b. mutaWis,Th. Fr. ; thallus thinner, wrinkled and warted ; 

 from ash-coloured becoming pale-yellowish, and livid. 



#, upon mosses and the earth in alpine districts. Greenland 

 (Vahl), Th. Fries I. c. 1861. Rocky Mountains, Brandegee in 

 herb. Sprague. Yosemite Valley, California (on an old stump, 



but not differing), Bolander. b, on dead wood, New York, 



Miss Wilson. Massachusetts, Mr. Willey. 



37. L. cinerea (L.) Sommerf. ; thallus sub-tartareous, areo- 

 late-rimose; glaucous-ash-coloured, whitish, and now blacken- 

 ing ; the hypothallus also blackening ; apothecia small to almost 

 middling, innate (or emergent) flattish; the mostly persistent, 

 entire thalline margin commonly blackening. Spores rounded, 

 ovoid, and ellipsoid, ^ mic. Nyl. Scand. p. 153. 



1. Icevata, Fr. ; thallus thin, smooth, less chinky; glaucous- 

 lurid; the hypothallus continuing pale; apothecia immersed, 

 concave, often irregular. Spores as in a. Fr. L. E. p. 145. 



c. gibbosa, Nyl.; thallus tartareous, thickish, rugged and 

 soon warted or glebous; dark-ash-coloured; apothecia becom- 

 ing superficial. Spores rather larger. Nyl. Scand. I. c. 



