Bruce Fink

“ Thallus thin and inconspicuous, or becoming thick and more prominent, composed of rounded and often crowded or even heaped granules, these frequently compacted into a continuous or scattered, verrucose and often chinky, green-gray to olivaceous crust; apothecia small to large, 0.6 to 1.75 mm. in diameter, dark brown to black, adnate or sessile, flat or slightly convex, the concolorous or lighter exciple frequently becoming flexuous; hypothecium pale yellow to dark brown; hymenium pale yellow; paraphyses coherent, distinct to semi-distinct: asci long-clavate ”

“ A vertical section through an apothecium of Buellia parasema, the thallus below, and a portion of the woody substratum: a, the hymenium, composed of asci and paraphyses; b, the strongly developed, dark colored exciple; c, the dark colored hypothecium; d, the thallus, composed of interwoven hyphae, and enclosing cells of the algal host, a portion of the woody substratum. ”

“ Peltigera canina (L.) Hoffm. Deutsch. Fl. 2: 108. 1795.
Lichen caninus L. Sp. Pl. 1149. 1753.
Thallus closely adnate toward center, the lobes more or less ascending, 6 to 15 cm. in diameter, the upper surface for the most part thickly covered with trichomatic hyphae, generally giving it a downy appearance under the lens, the lobes numerous and usually broad and rounded, with entire or crenate and much crisped margins, usually green-gray but sometimes becoming brown, below almost white, netted with light brown or gray veins, these bearing rhizoids of the same color ”

“ On shaded sandstone, intermingled with an ash-gray, crustose thallus, which appeared like a sterile Pertusaria. The type specimen is deposited in the writer's herbarium, and a cotype may be seen in the State Herbarium.
The plant resembles Buellia vernicoma Tuck.
2. Rhizocarpon alboatrum (Hoffm.) Th. Fr. Nov. Act. Reg. Soc. Sci. Ups. III. 3: 337. ”

“ Collected in Adams County. On maple bark. Also reported from Franklin County. The plant is so minute and inconspicuous as to be very difficult to detect and is probably distributed widely in the State. ”

“ 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. ”