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B, SCRUPULOSA n. sp. 
Thallus of thickened coalesing granules, areolate, rimulose, 
pale olive to yellowish brown, areoles adnate, contiguous, mingling 
into a continuous uneaven crust; apothecia scattered, diffiform, 
erect, black, plane and somewhat depressed, surrounded by a tor- 
tulous erect concolorous margin; spores simple, broadly ellipsoid, 
hyaline, = mic. A well marked species which seems to approach 
4. Kochiana Hepp. 
B. ALBO-FUSCESCENS (Nyl.) Eck. 
Thallus thinly diffused and even over the surface, plane and 
slightly granular or furfuraceous, or at length quite smooth and 
glaucous; epithecium pale; apothecia very sparse, rounded and 
elevated, at length flat; disk brown and prominent, reddish, mar- 
gin elevated. Spores ellipsoid, pointed, i mic. On rocks. 
B. mollis Wahl. 
B. Nylanderi Anzi. 
B. uliginosa (Schr.) Fr. 
B. varians Ach. ‘B. exigua Chaub.) 
B. mixta Fr. (B. tricolor Ny).) 
B. Laureri Hepp. 
L. Heeria Hepp. Parasitic on Solortna saccata. 
B. STEREOCAULORUM (Th. Fr.) Eck. (Biaéorima Lich. Miquelon, 
Arnold.) Thallus mostly wanting; apothecia very small, black, 
plane; epithecium brown, hymenium colorless to bluish, para- 
physes loosely disposed; spores hyaline, bilocular, 8 in thekes, a8 
mic. Parasitic on Stercocaulon alpinum. 
B. sphaeroides Dick. 
B. hypnophila Turn. 
B. artyta Ach. 
B. rubella Esch. 
B. rupEstrIs (Sch.) Eck. Thallus cinerascent, thin and closely 
adnate, apothecia flat, innate, smooth, rufescent with a raised mar- 
gin around the sunken disk. Spores immature. On rocks. 
B. muscorum Sw. 
B, umbrina Ach. 
B. opscuraTa (Sm.) Eck. Thallus composed of minute pale 
ashy to white rugose granules; apothecia minute, rounded and 
flat, dark brown to black, smooth and shining with a receding 
Margin, very numerous. Spores broadly ellipsoid 4-locular, ea 
mic. On dead moss. 
