Riddle: Lichens Collected in Jamaica 



137 



80. Sticta tomentosa (Sw.) Ach. Meth. 279. 1803. Cum- 



mings no. 29 has cilia longer than usual and margins with 

 occasional lobules, which are, however, not at all isidioid, 

 as in S. Weigelii (Ach.) Wainio. No. 33 also comes 

 here but has glabrous margins. 



81. Sticta Weigelii (Ach.) Wainio (1890) i: 189. Sticta 



quercizans Delise Hist. Sticta 84. 1822, and many 

 authors. Cummings nos. 32, 34 and 35. 



82. Peltigera canina (L.) Hoffm. Deutsch. Fl. 2: 106. 1795. 



Cummings no. 51 is the typical form. No. 52 has been 

 issued in Merrill's Lich. Exsic. no. 49 as " var. laciniata 

 Alerrill var. nov." This appears to be worthy of varietal 

 rank and as the above is a nomcn nudum a brief diagnosis 

 is here appended : Thallus deeply cleft into relatively few, 

 narrow lobes (i cm. wide or less), with the margins 

 more or less crenate and crisped ; upper surface con- 

 spicuously tomentose; under side pale at the margin, be- 

 coming dark toward the center, with a few scattered, 

 coarse rhizoids. 



83. Peltigera polydactyla (Neck.) Hoffm. loc. cit. Cum- 



mings nos 53 and 54. 



84. Pertusaria cryptocarpa Nyl. Ann. Sci. Nat. IV. 11: 221. 



1859. Cummings no. 106 agrees with Nylander's descrip- 

 tion, except that the spores are somewhat larger (96- 

 125 X 30-36 ft instead of 80-95 X 28-30 /x). 



85. Pertusaria leioplacella Nyl. Bull. Soc. Linn. Normandie 



II. 2: 71. 1868. Cummings no. 123. 



86. Pertusaria tuberculifera Nyl. Ann. Sci. Nat. IV. 19 : 



323. 1863. Cummings no. 103. 



87. Pertusaria velata (Turn.) Nyl. Not. Sallsk. Faun. Flor. 



Fenn. 5: 179. 1861. Cummings no. loi. 



88. Lecanora pallida (Schreb.) Schaer. Enum. Lich. Eu. 78. 



1850. Cummings no. 120. 



89. Lecanora subfusca (L.) Ach. Lich. Univ. 393. 1810. 



Cummings no. 113a. 



