134 



Mycologia 



61. Leptogium saturninum (Dicks.) Nyl. Actes Soc. Linn. 



Bordeaux 21 : 272. 1856. Leptogium myochroum var. 

 tomenfosum (Hoffm.) Schaer. Cummings nos. 57 and 58. 



62. Leptogium tremelloides (L. f.) S. F. Gray, Nat. Arr. Brit. 



PI. 1 : 400. 1 82 1. Cummings nos. 63 and 66 ; also 65 ( ?) . 



63. Leptogium tremelloides f. impresso-punctatum Tuck, in 



Wright's Lich. Cubae no. 17. Cummings no. 61. Issued 

 in Merrill's Lich. Exsic. no. 131 as L. foveolatum Nyl. 

 a species much more definitely lacunose than the present 

 form, which is minutely and sparsely pitted. 



64. Parmeliella tryptophylla (Ach.) Muell. Arg. Mem. 



Soc. phys. et d'hist. nat. de Geneve 16: 376. 1862. Pan- 

 naria Mass. Cummings no. 50. 



65. Pannaria leucosticta Tuck. Proc. Am. Acad. Arts and 



Sci. 4: 404. i860. Cummings no. 47a. 



66. Pannaria rubiginosa (Thunb.) Delise. Diet. Class. 13: 20. 



1828. Cummings no. 46. No. 47 also appears to belong 

 here but is less typical. 



67. Erioderma microcarpa sp. nov. 



Thallus irregularly and more or less imbricately laciniate- 

 lobate; upper surface fuliginous-brown, coarsely short-pilose, 

 minutely but conspicuously roughened between the fibrils ; under 

 side sulphury to intensely yellow, conspicuously veined, and with 

 white rhizoids. Upper cortex well-developed and pseudoparen- 

 chymatous. Apothecia very small for the genus, 0.8 mm. or less 

 in diameter, pallid reddish-brown, borne on the surface of the 

 thallus and somewhat elevated, margin concolorous, thick and 

 subpersistent, glabrous. Exciple well-developed, of vertical, 

 parallel, thick-walled hyphae, pallid, without gonidia, epithecium 

 obscure, granular; hymenium hyaline, with iodine blue, slowly 

 turning brown ; hypothecium pallid. Spores 8, simple, hyaline, 

 ovoid, the epispore thickened and minutely roughened, 12- 

 16X7-8/^. 



Type collected in Jamaica, B. W. L Clara E. Cummings no. 

 189, in herbarium of Wellesley College. 



68. Erioderma Wrightii Tuck. Am. Journ. Sci. 25 : 423. 1858. 



Cummings no. 25. 



