Thallus of minute, gray-green, often heaped granules, these forming a continuous, thin or thicker crust; apothecia minute to small, 0.2 to 0.4 mm. in diameter, adnate, flesh-colored to red-brown, flat to convex and subglobose, the inconspicuous, concolorous exciple soon covered; hypothecium and hymenium pale; paraphyses usually coherent-indistinct; asci clavate; spores fusiform-ellipsoid, 4-celled, 12 to 20 mic. long and 4 to 6 mic. wide. Collected on Little Mountain, in Lake County. On a rotten log in a wood. Rare in Ohio, and its distribution unknown. The plant is typical internally, but is young with small, flat or slightly convex, light-colored apothecia. 2. Bilimbia hypnophila (Ach.) Th. Fr. Nov. Act. Reg. Soc. Sci. Ups. III. 3: 283. 1861. _Lecidea hypnophila_ Ach. Lich. Univ. 199. 1810. Thallus of minute, usually crowded, sometimes confluent granules, these forming an ash- or green-gray, thin, leprose or subgranulose, sometimes scattered and disappearing crust; apothecia minute to middle-sized, 0.2 to 0.75 mm. in diameter, light brown to black, adnate to sessile, scattered or clustered, becoming strongly convex and the exciple becoming covered; hypothecium pale or darker brown; hymenium pale, or tinged brown below and more plainly brown above; paraphyses coherent, semi-distinct to indistinct; asci clavate or long-clavate; spores ellipsoid to fusiform, 4- to 8-celled, 16 to 35 mic. long and 4 to 8 mic. wide. Collected in Preble, Hocking, and Adams counties. Over mosses on rocks or bases of trees; or rarely on rocks, soil, bark, or wood. Not previously reported from Ohio, and not a common fungus in the State. 3. Bilimbia naegelii (Hepp) Zwackh. Flora. 45: 505. 1862. _Biatora naegelii_ Hepp, Spor. Flecht. Eur. pl. 4. f. 1. 19. 1853. Thallus of usually flattened granules, these commonly running together to form a moderately thin, more or less roughened, often chinky, ash- or green-gray, or darkening, limited or rarely wide-spread crust; apothecia minute to middle-sized, 0.2 to 0.9 mm. in diameter, adnate or rarely sessile, flesh-colored to dark brown, scattered or clustered, flat with the thin exciple visible to strongly convex with the exciple covered; hypothecium pale or tinged brown; hymenium pale throughout or tinged brown above; paraphyses coherent, semi-distinct to indistinct; asci clavate; spores fusiform-ellipsoid, 4- to 8-celled, 18 to 25 mic. long and 3 to 4 mic. wide. Collected in Highland County. On bark. Not previously reported from Ohio, and doubtless rare in the State. The usual width given for the spores is 4 to 6 mic., and our plant is placed here provisionally. 4. Bilimbia melaena (Nyl.) Th. Fr. Lich. Scand. 383-385. 1871. _Lecidea melaena_ Nyl. Bot. Not. 1853: 182. 1853.