8. Lecidea sylvicola Koerb. Syst. Lich. 254. 1855.
Thallus of minute, irregular, somewhat flattened or more rarely hemispherical, green-gray, olive-brown, or darker granules, these forming a thin, continuous, or rarely scattered, subleprose, verrucose, or even subareolate, wide-spread crust; apothecia minute to small, 0.2 to 0.5 mm. in diameter, adnate or rarely more or less immersed, dark brown to black, flat to convex, the black exciple soon becoming covered; hypothecium brown to black-brown; hymenium pale or tinged brown; paraphyses coherent, semi-distinct to indistinct; asci clavate; spores ellipsoid, 5 to 9 mic. long and 2.5 to 4 mic. wide.
Collected in Lake, Ross, Preble, Hocking, and Butler counties. On various rocks. Not previously reported from Ohio, and apparently new to America under this name. Widely distributed in Ohio.
For possible relationship to Lecidea myriocarpoides Nyl. See "The Lichens of Minnesota" (Cont. Nat. Herb. 14: 74. 1910).
9. Lecidea flexuosa (Fr.) Nyl. Act. Soc. Linn. Bord. 21. 356. 1856.
Biatora flexuosa Fr. Vet. Akad. Handl. 1822: 267. 1822.
Thallus of small or minute, flattened or rugose, scattered or clustered, ash-grey to green-gray granules, these bursting into sorediate heaps, or forming a moderately thick, areolate crust; apothecia minute to small, 0.2 to 0.4 mm. in diameter, adnate, black, and flat, the thin, livid or darker, persistent exciple becoming flexuous; hypothecium pale or darker brown; hymenium tinged brown; paraphyses coherent, semi-distinct to indistinct; asci cylindrico-clavate; spores oblong-ellipsoid, 5 to 10 mic. long and 3 to 5 mic. wide.
Collected in Preble, Adams, Ross, and Butler counties. On dead wood. Not previously reported from Ohio, and rare, though probably distributed widely in the State.
The spores are slightly below normal size in our specimens.
10. Lecidea enteroleuca Ach. Lich. Univ. 177. 1810.