272 FLORA OF MOUNT DESERT. 



* A. Hamamelidis, Nyl. 



Thallus thin, white, but darkening, very diffused. Apothecia 

 irregularly shaped, stellate, ramose, plane or somewhat convex, 

 pale within. Spores 4-locular, jjjjff ~_ jj^| mic. Generally on smooth 

 barks of Hamamelis. Southwest Harbor (Eckfeldt). 



TRIBE IV. CALICIACBI. 

 SPELEROPHOREI. 



SPH-SJROPHORUS, Pers.* (Sphcerophoron, Pers.) 

 S. globiferus (L.), DC. S. coralloides, Pers. 



Thallus fruticulose, somewhat compressed or terete, with erect- 

 ish, minutely fibrillose, ramulose branches, from pale to chest- 

 nut brown. Apothecia black, globose, shining, tertninal with an 

 inflexed margin. Spores spherical, violet black, medullary layer 

 purple with potash reaction, .009 X .011 mic. "Mt. Desert" 

 (Eckfeldt). 



CALICIEI. 



ACOLIUM, FSe.f 

 A. tigillare (Ach.), De Not. 



Thallus yellow-green or more lemon-colored, granulose or 

 areolate throughout. Apothecia black, stout, erect, more or 

 less innate. Spores brown, ellipsoid to bilocular, '^fl'^f mic. 

 On old fence rails and boards. (Eckfeldt) ; Seal Harbor 

 (Wilson). 



CALICIUM, Pers.} 



* C. subtile, Fries. 



Thallus whitish or ash-colored, very thin, evanescent. Apo- 

 thecia very small, stipe delicate, short and black, capitula very 

 minute, somewhat globose, dark and depressed. Spores brown, 

 2-locular, 2-'wB mic< " Mt - Desert" (Eckfeldt). 



* For description of genus, see Tuck., Syn. N. A. Lichens, part i., 13. 

 t For description of genus, see Ibid. 

 J For description of genus, see Ibid. 



