_Lecidea incompta_ Borr. in Sowerby, Engl. Bot. Suppl. 2: pl. 2699. 1834. Thallus of very minute granules, these forming a continuous or more or less broken, wide-spread, sometimes thick and rugose or rarely even subareolate, or again thin, smooth, more or less mealy, light or darker green-gray, rarely disappearing crust; apothecia minute to middle-sized, 0.3 to 0.75 mm. in diameter, dark brown to black, adnate to sub-sessile, flat or becoming convex, with a thin and frequently flexuous exciple; hypothecium pale brown to brown; hymenium pale below and pale brown above; paraphyses coherent, semi-distinct to indistinct; asci long-clavate; spores 4- to 12-celled, 18 to 35 mic. long and 1.5 to 3 mic. wide. Collected in Adams County. On bark. Not previously reported from Ohio, and doubtless rare in the State. 7. Bacidia umbrina (Ach.) Br. & Rostr. Bot. Tidssk. 3: 235. 1869. _Lecidea umbrina_ Ach. Lich. Univ. 183. 1810. Thallus a rather thick and continuous, or rarely thinner and scattered, subleprose, chinky, rugose-granulate or subareolate, green-gray to dark olive-brown, sometimes largely disappearing crust; apothecia minute to small, 0.25 to 0.6 mm. in diameter, light brown to black, adnate to somewhat immersed, at first flat with a commonly paler exciple, becoming convex with the exciple sometimes covered; hypothecium pale or darker brown; hymenium pale throughout, or tinged brown above; paraphyses coherent, semi-distinct to indistinct; asci long-clavate, or inflated-clavate; spores hamate, or more or less spirally twisted, about 4- to 8-celled, 18 to 30 mic. long and 2 to 3 mic. wide (Fig. 7). Collected in Preble, Lake, Hocking, and Adams counties. Also examined from Wayne County. On various rocks. Not previously reported from Ohio, but evidently distributed widely in the State. Buellia De Not. Giorn. Bot. Ital. 21: 195. 1846. Thallus granulose, verrucose, or areolate, rather better developed than those of the preceding genera as shown in the more frequent verrucose and areolate conditions; apothecia minute to large, sessile to immersed, the disk and the exciple usually black; hypothecium usually brown; hymenium pale to light brown; paraphyses usually distinct; spores brown, 2-celled. KEY TO THE SPECIES OF BUELLIA On rocks 3. B. _turgescentoides_ On wood, or on bark. On dead wood 1. B. _myriocarpa_ On bark 2. B. _parasema_ 1. Buellia myriocarpa (Lam. & DC.) Mudd. Man. Brit. Lich. 217. 1861. _Patellaria myriocarpa_ Lam. & DC. Fl. ed. 3. 2: 346. 1805.