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.
Thallus of minute, olive-green to black-brown granules, these forming a thin, granulose or scurfy, sometimes disappearing crust; apothecia minute to small, 0.25 to 0.55 mm. in diameter, black-brown to black, sessile, occurring singly or in clusters, strongly convex to subglobose, the exciple soon covered; hypothecium pale brown to red-brown; hymenium pale or tinged brown; paraphyses coherent, semi-distinct to indistinct; asci clavate to inflated-clavate; spores oblong-ellipsoid or dactyloid, 2- to 4-celled, 12 to 22 mic. long and 4 to 6 mic. wide.
Collected in Lake County. On an old log in a wood. Not previously reported in Ohio, and rare in the State.
Nylander called the apothecium pale within, but forms with red-brown hypothecia are admitted by later writers.
5. Bilimbia microcarpa Th. Fr. Bot. Not. 1863: 8. 1863.