OF ARTS AND SCIENCES : APRIL 12, 1864. 277 



requabili glauco-viridulo cum hypothallo confuso ; apotheciis minutis 

 appressis disco mox convexo carneo-rubello margine tenuissimo demisso 

 integro albido. Sp. Snas, incolores, dactyloideae, 5-8- soepius 8- 

 blastiB, diam. 4-6° longiores. On trees in the eastern part of the 

 island of Cuba, Mr. Wright (Lich. Cub. n. 202). Hypothecium 

 brownish. Apothecia rather larger than those of L. orphn(ea. One 

 of a little group of closely allied lichens, of which the species next to 

 be described, and also, if I mistake not, Biatora pusilla, Mont. Cuba, 

 p. 199, t. 10, f. 2, " apoth. minimis carneo-IuteoUs excipulo granulate 

 margine dentato-crenato," and quadrilocular spores, are other members. 



Lecidea (Bilimbia) palmicola, sp. nov. : thallo tenuissimo con- 

 tiguo Eequabili stramineo-glaucescente cum hypothallo confuso ; apo- 

 theciis minutis sessilibus, disco subplano luteo fulvescente margine inte- 

 gerrimo concolore evanido, accessorio albo primitus subcinctis. Sp. in 

 thecis clavatis octon^e, incolores, dactyloidete, tetrablastsE, s^pe obliquae 

 vel curvulae, diam. 2-3° longiores. On leaves of palms, in the island 

 of Cuba, Mr. Wright (Lich. Cub. n. 201). The colors make this httle 

 lichen easily distinguishable. The adnate apothecia become finally 

 free at the circumference, and are rarely at length proliferous. The 

 marginate disk rests upon, or is sometimes elevated by, a white layer, 

 which often more or less borders it. 



Lecidea (BiUmbia) thtsanota, sp. nov. : thallo subtartareo 

 leproso-granuloso dein granulis confluentibus rimoso albo hypothallo 

 fibrilloso concolore fimbriato ; apotheciis parvis sessilibus, disco piano 

 e rufo-fusco nigrescente margine demisso pallidiore evanido instructo, 

 strato albo subelevatis marginatisque. Sp. in thecis clavatis confertis 

 octonoe, parvse, incolores, ex elhpsoideo subdactyloideae et oblongte, 2 - 

 4-blast8e, diam. 2 J - 4° longiores. Trunks in the mountams of Cuba, 

 Mr. Wright (Lich. Cub. n. 210). The extreme edge of the hypo- 

 thalUne fringe is finally darkened. Paraphyses scarcely to be dis- 

 tinguished. Hypothecium fuscescent. Compared by Dr. Nylander 

 (I.e.) with his L. byssomorpha, occurring, "sub. n. 811 admixta," in 

 the N. Granada collection of Lindig, and distinguished by its byssoid 

 thallus, " verging towards the Byssocaula." The lichens of Mr. Lin- 

 dig's collection were not put up by the eminent lichenographer who 

 has so ably illustrated them, and there is here and there some confusion 

 of specimens. In my copy of the collection, there is, mixed with L. 

 vigilans, under No. 811, a not wholly dissimilar BiUmbia (th. granu- 



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