CATALOGUE OF PLANTS. 273 



TRIBE V. VERRUCARIACEI. 

 ENDOCARPEL 



ENDOCARPON, Hedw.* 



* E. miniatum (L.), Schaer. 



Thallus ashy white and darkening, simple, coriaceous, peltate, 

 attached to the centre, the upper surface minutely granulose or 

 pulvinate. Apothecia very minute, abundant, and enclosed in 

 the thallus. Spores ellipsoid, simple, i^I.'oJo mic - On rocks; 

 rather common. Southwest Harbor (Eckfeldt). 



* Var. complicatum, Schaer. 



Thallus closely csespitosely conjoined, many growing together, 

 border of thallus raised and frequently darkening, erect, com- 

 plicate, often pruinose. Spores same as in type. On rocks. 

 (Eckfeldt.) 



VERRUCARIEI. 



VERRUCARIA, Pers.f 



* V. rupestris, Schrad. 



Thallus grayish white or very pale, and even brown, very thin 

 (becoming obsolete), tartareous and pulverulent. Apothecia 

 black, numerous, sub-immersed but very conspicuous, hemi- 

 spherical. Spores 8, hyaline, ellipsoid, oblong, simple, - 01Q ~_ Q13 

 mic. On various rocks and stones. Southwest Harbor (Eckfeldt). 



* V. nigrescens, Pers. 



Thallus dark to a distinct black, rimulose, somewhat areolate, 

 thick and uneven, loosely disposed and friable, developing into 

 nodose elevations around the apothecia. Apothecia dull black, 

 very numerous, hemispherical. Spores oblong, simple, '^ ~_ '^ 

 mic. On rocks and stones. Southwest Harbor (Eckfeldt). 



* For description of genus, see Tuck., Syn. N. A. Lichens, part i., 14. 

 t For description of genus, see Ibid., 15. 



18 



