130 



Mycologia 



23. Bilimbia artytoides (Nyl.) comb. nov. Lecidea Nyl. Ann. 



Sci. Nat. IV. 19: 342. 1863. Biatora triseptata var. 

 artytoides Tuck. Genera Lich. 162 (note). 1872. Cum- 

 mings no. 166. 



24. Bilimbia hypnophila (Ach.) Th. Fr. Lich. Arctoi 183. 



i860. Cummings no. i66a. 



25. Bilimbia pallidissima sp. nov. 



Thallus dirty white, thin, of more or less discrete, flattened, 

 minute granules. Apothecia minute, 0.2-0.5 mm. in diameter, 

 closely appressed and flattened, emarginate from the beginning, 

 soon irregular and confluent, very pallid. In section the apothe- 

 cium is entirely hyaline in all parts. Spores 8, hyaline, 4-locular, 

 fusiform, blunt, broader at one end, 17-20 X 4-5 f^- 



Type collected on bark, Jamaica, B. W. I. Clara E. Cummings 

 no. 134, in herbarium of Wellesley College. Stock of B. 

 sphaeroidcs (Dicks.) Th. Fr., from which it differs in the thallus 

 and in the shape of the apothecia. 



26. Bilimbia radicicola sp. nov. 



Thallus pale creamy-brown, thick, encrusting the substratum, 

 finely but densely granular. Apothecia 0.6-1 mm. in diameter, 

 dark ferruginous-brown, at first somewhat concave, with a thick, 

 flexuous paler margin, then becoming plane to convex and the 

 margin less prominent, although always persistent. Exciple and 

 epithecium pale ; hymenium tinged with brown ; hypothecium 

 brownish-black. Spores 8, hyaline, 4-locular, oblong-ovoid to 

 broad fusiform, larger at one end, 22-30 X 8-10 /x. 



Type found growing over matted roots, Jamaica, B. W. I. 

 Clara E. Cummings no. 162, in the herbarium of Wellesley Col- 

 lege. Apparently related to B. molybditis (Tuck.). 



27. Bilimbia thysanota (Tuck.) comb. nov. Lecidea Tuck. 



Proc. Am. Acad. Arts and Sci. 6: 277. 1864. Biatora 

 Tuck. Syn. N. A. L. 2 : 158. 1888. Cummings no. 150. 



28. Bilimbia terrestris sp. nov. 



Thallus dirty white, of heaped and conglomerate granules, 

 which average 0.2 mm. in diameter, the heaps scattered and not 

 forming a continuous thallus. Apothecia 0.8-1 mm. in diameter, 

 subimmersed, solitary or aggregated, convex to globular, emar- 



