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.
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.