252 HERRE 



7. RINODINA SOPHODES (Ach.) Th. Fr. 



Lichen sophodes Ach. Lich. Suec. Prodr. 67. 1798. 



Rinodina sophodes Th. Fr. Lich. Scand. I: 199. 1871. 



Rinodina sophodes Tuck. Syn. N. Am. Lich. I: 207. 1882, in part. 



Thallus more or less determinate, thin or of moderate thickness, 

 bordered by a black hypothallus; uniform granular or of uneven 

 granulose areoles; color olive-brown or gray-brown; KOH ; 

 CaCl 2 O 2 -. 



Apothecia small, appressed, the disk at first plane, then convex, 

 color varying from dark brown to brownish-black; the thin entire 

 margin usually paler, rarely blackening; epithecium dark brown; 

 paraphyses slender, confluent, or hardly free, their tips enlarged, yel- 

 low and darker; hypothecium colorless; hymenium deep beautiful 

 blue with I; spores ellipsoid or sub-ellipsoid, often with one side 



7 12 

 nearly straight, the other one strongly arched, ^ _ ^ {* 



Common on bark throughout, and distributed over the entire 

 earth. 



8. RINODINA ATRO-CINEREA (Dicks.) Korber. 

 Lichen atro-cinerea Dickson, Plant. Crypt. Brit., Fasc. Ill: 14. 



1793- 



Rinodina atro-cinerea Korber, Syst. Lich. Germ. 125. 1855. 

 Rinodina sophodes b. atro-cinerea Tuck. Syn. N. Am. Lich. I: 207. 



1882. 



Thallus of small, sub-lobulate granules or areoles, scattered, or 

 subcontiguous and forming a chinky, areolate, unequal crust, of a 

 whitish or light ashy gray color; hypothallus not perceptible; KOH 

 yellow; CaCl 2 O 2 reddish. 



Apothecia small to very small, adnate, sessile, the red-brown disk 

 darkening, from brown to black; at first plane but soon convex; the 

 entire, whitish thalline margin very soon disappearing and the apo- 

 thecia then purely lecideine, with a thin, entire, proper margin which 

 may also disappear; paraphyses simple, free, thread-like, their tips 

 hardly enlarged; epithecium umber or blackish; thecium deep blue 



8 -5 - 12.5 ' 



with I; spores ellipsoid, oblong, or bowed, 



17 - 27 



