138 Mycologia 



90. Lecanora varia (Hoffm.) Ach. Lich. Univ. 377. 1810. 



Cummings nos. 113 and 130. 



91. Haematomma puniceum (Ach.) Wainio (1890) i: 72. 



Lecanora Ach. Syn. 174. 1814. Cummings no. 141. 



92. Parhelia cetrata var. ciliosa Viaud-Grand-Marais, Notes 



Parm. Phys. de I'Ouest 156. 1892. Cummings no. 38, 

 Margins both sorediate and cihate. 



93. Parhelia cetrata var. subsidiosa Muell. Arg. Engler 



Jahrb. 20: 256. 1894. Cummings no. 39. Margins 

 isidiose and cihate. 



94. Parhelia laevigata (Sm.) Ach. Syn. 212. 1814. Cum- 



mings nos. 17, 40 and 41. 



95. Parhelia perforata (Wulf.) Ach. Meth. 217. 1803. 



Cummings no. 43 appears to belong here, but is scarcely 

 typical, the rhizoids being almost wholly absent, and the 

 margins with soredia as well as cilia. 



96. Physcidia Wrightii Tuck. Proc. Am. Acad. Arts and Sci. 



5: 401. 1862. Cummings no. 125. This has been com- 

 pared with the type specimens in Wright's Lich. Cubae 

 no. 92 and agrees exactly. It is to be noted that Dr. 

 Zahlbruckner in Engler & Prantl : Nat. Pflanzenfam. (loc. 

 cit.) erroneously states that the spores of this genus are 

 simple. 



97. Rahalina denticulata (Escliw.) Nyl. Bull. Soc. Linn. 



Normandie IL 4: 126. 1870. Cummings no. 179. 



98. Rahalina linearis (Sw.) Ach. Lich. Univ. 598. 1810. 



Cummings nos. 180 and 181. 



99. Rahalina usneoides (Ach.) Fr. Lich. Eu. 468. 183 1. 



Cummings no. 188. 



TOO. UsNEA ANGULATA Ach. Syn. 307. 18 14. Cummings no. 4 is 

 a peculiar sorediate form ; no. 5 is typical. 



loi. UsNEA CERATiNA Ach. Lich. Uuiv. 619. 1810. Cummings 

 nos. 2 and 6. 



