250 



HERRE 



ellipsoid, from colorless becoming dark brown, bilocular, the septum 



7 1^ — 12 . 2S 



broad, ^-^ ;r Z^- 



' 14 - 19-5 



Abundant on limestone near the summit of Black Mountain, 

 altitude 2700 feet. 

 A European lichen which I fail to find recorded from this country. 



4. RINODINA TEPHRASPIS Tuck. 

 Lecanora tephraspis Tuck. Proc. Am. Acad. Arts & Sci., 



p. 425, . 



Rinodina sophodes c. tephraspis Tuck. Syn. N. Am. Lich. I: 208. 



1882. 



Thallus of thick, swollen, uneven, densely crowded and variously 

 shaped areoles; from dark brownish ashen becoming very dark, 

 finally olive black; hypothallus hardly perceptible; KOH— ; 

 CaClaOa-. 



Apothecia numerous, at first innate and very small, emerging 

 and sessile, finally of medium size; the disk black or very dark; 

 the entire, persistent margin at first paler but soon blackening; 

 epithecium dark brown; paraphyses thread-like, free, the tips be- 

 coming much enlarged, yellow to brownish; thecium blue with I; 



spores with thick walls, blunt and broadly ellipsoid, — ,«. 



Abundant on serpentine and occurring also on other rocks in the 

 foothills. 



A North American plant, separated from sophodes by the different 

 thallus, the free paraphyses, and the broader spores, as well as the 

 different habitat. 



5. RINODINA CONFRAGOSA (Ach.) Korb. 



Parmelia confragosa Ach. Meth. Lich. Supplem. 33. 1803. 

 Rinodina confragosa Korber, Syst. Lich. Germ. 125. 1855. 

 Rinodina sophodes d. confragosa Tuck. Syn. N. Am. Lich. I: 208. 



1882. 



Thallus of rather thick, lobulate or warty, conglomerate areoles, 

 from whitish becoming brown-gray; KOH bright yellow; CaCl202— ; 

 the h>pothallus not observable in my specimens. 



