276 PROCEEDINGS OF THE AMERICAN ACADEMY 



Granules of the crust now vermilion-colored within, as in a not wholly 

 dissimilar granulate condition of L. parasema. More rarely the exciple 

 is colored like the thallus. There is a similarly whitish-margined state 

 of Z. (Biatorella) conspersa, Fee (Wi-ight. Lich. Cub. n. 224). The 

 lichen is dedicated to my excellent friend the discoverer, to whose ardor 

 and acuteness, displayed in every quarter of the globe, Botany, and 

 especially the knowledge of Lichens, has been indebted, as to few 

 others. 



Lecidea (Bilimbia) luteo-rupula, sp. nov. : thallo cartilagineo 

 contiguo Isevigato rimuloso viridi-glaucescente hypothallo albo sub- 

 marginato ; apotheciis mediocribus appressis planis dein flexuoso- 

 lobatis disco e luteolo-rufescente demum fulvo marginem tenuem in- 

 tegerrimum pallidiorem subajquante. Sp. in thecis clavatis suboctonte, 

 parvse, incolores, simplices, ex ovoideo- fusiformi-ellipsoidete, diam. 'i^ — 

 5° longiores. Paraphyses conglutinatte. On trunks, Loo Choo Islands 

 (U. S. N. Pacif. Expl. Exp.), Mr. Wright. Ilypothecium pale. Apo- 

 thecia flatter and with a thinner margin than in the tropical lichens, 

 known to me, nearest related to L. vernalis, as L. Icetior, Nyl. (Wright. 

 Lich. Cub. n. 197), and much more comparable, except in color, with 

 L. russula. Like the lichen of Cuba fii'st cited, as well as L. subver- 

 ndlis, Nyl. (Lich. Cub. n. 198), the present also differs from the 

 Northern plant (Fr. Lich. Suec. n. 224, Stenh. Suec. n. 54, a) in its 

 smaller spores, which in L. luteo-rufula are always simple. As respects 

 the size of the spores, L. cinereo-rufescens, Nyl. (Wright. Lich. Cub. 

 n. 199) agrees better with L. vernalis, but differs in other respects from 

 that, and especially from the present. I venture to refer this to Bilimbia 

 in order to keep it in its natural relations to L. vernalis, which it is 

 unnatural to place in a distinct group from L. sphceroides, the two 

 latter species scarcely indeed diflFering in most respects, except that the 

 simple spores of the first pass only into the bilocular state, while in 

 the last the differentiation is carried further, to quadrilocular. 



Lecidea (Bilimbia) pell^a, sp. nov. : thallo tenuissime leproso 

 viridi-cinerascente hypothallo nigro ; apotheciis parvis adnatis margine 

 tenui ruguloso fusco-nigro discum planum opacum livido-nigricantem 

 intus nigrum cingente. Sp. octonoe, parvce, incolores, ex oblongo sub- 

 bacillares, saepius diblastae, dein tetrablastte, diam. 4-6° longiores. 

 On trunks in the mountains of Cuba, Mr. Wright (Lich. Cub. n. 206). 



Lecidea (Bilimbia) scitula, sp. nov.: thallo tenui contiguo in- 



