Thallus a thin and scurfy, smooth or chinky, or thicker and roughened-verrucose, ash- to green-gray, or darkening crust, irregularly spread over small areas, and rarely disappearing; apothecia minute to small, 0.2 to 0.6 mm. in diameter, often numerous, black, adnate, flat and bordered by an exciple, or becoming convex with the exciple sometimes covered; hypothecium dark brown; hymenium pale, or pale below and pale brown above; paraphyses distinct, but sometimes loosely coherent; asci clavate; spores oblong-ellipsoid, 7 to 16 mic. long and 4 to 7.5 mic. wide. Collected in Butler and Lake counties. On dead wood, especially posts and boards. Also reported from Cuyahoga County. An inconspicuous fungus, doubtless distributed widely in the State. 2. Buellia parasema (Ach.) Koerb. Syst. Lich. 228. 1855. _Lichen parasemus_ Ach. Lich. Suec. 64. 1798. Thallus usually continuous and smooth, but sometimes becoming thicker and roughened, granulate, chinky, or finally areolate, ash- to green-gray, and darkening, or even yellow-green, usually bordered wholly or in part by a black margin; apothecia small to large, 0.4 to 1.3 mm. in diameter, black, adnate to sessile, or rarely more or less immersed, flat with a prominent, concolorous, sometimes flexuous exciple, or sometimes becoming convex, with the exciple often covered (Fig. 11); hypothecium dark brown; hymenium pale below and pale brown above; paraphyses distinct (Fig. 12), but sometimes loosely coherent; asci clavate (Fig. 13), or rarely inflated clavate; spores oblong to ellipsoid, 10 to 18 mic. long and 5 to 9 mic. wide, rarely 3-celled (Fig. 13). Collected in Fairfield, Lake, Adams, Highland, Hocking, and Butler counties. Also examined from Morgan, Madison, and Muskingum counties. On bark. Generally distributed in Ohio. 3. Buellia turgescentoides sp. nov. Thallus a thick, continuous or scattered, flat or verrucose, areolate or subareolate, dull olive-brown, and darkening crust, covering small areas or spreading widely over the substratum, the marginal areoles sometimes lobulate; apothecia minute to small, 0.2 to 0.5 mm. in diameter, immersed to adnate, scattered or clustered, black, flat with the thin concolorous exciple visible, or convex with the exciple covered; hypothecium pale or darker brown; hymenium pale; paraphyses stout, distinct, but often loosely coherent; asci clavate or inflated-clavate; spores brown, 2-celled, oblong to oblong-ellipsoid, 8 to 13 mic. long, and 4 to 6 mic. wide, 8 in each ascus. Collected in Lake County. On exposed igneous rocks. The type specimen is deposited in the writer's herbarium, and a cotype may be found in the State Herbarium. This species is a coarser plant than _Buellia turgescens_ (Nyl.) Tuck., with much stronger, darker thallus and apothecia on the whole larger. Rhizocarpon Ram. in Lam. & DC. Fl. Fr. ed. 3. 2: 365. 1805.