338 
OHIO BIOLOGICAL SURVEY 
1. Lecidea coarctata (J. E. Smith) Nyl. Act. Soc. Linn. Bord. 21: 358.1856. 
Lichen coarctatus J. E. Smith in Sowerby, Eng. Bot. 8: pi. 534. 1789. 
Thallus of minute, scattered or clustered, rounded, angular, or min¬ 
utely and irregulary crenate, green-gray, pale brown, or more commonly 
ash-white granules, sometimes passing into a subcontinuous, chinky or are- 
olate crust; apothecia minute to small, 0.2 to 0.4 mm. in diameter, adnate, 
from flesh-colored to black, commonly concave or flat, sometimes difform, 
frequently surrounded laterally by a thalloid veil; hypothecium and 
hymenium pale to pale brown; paraphyses distinct; asci clavate or cylindri- 
co-clavate; spores ovoid to ellipsoid, 13 to 23 mic. long and 7 to 10 mic. 
wide. 
Collected in Lake, Ross, Hocking, and Preble counties. Also exam¬ 
ined from Lawrence County. On rocks and old bricks. Not previously 
reported from Ohio. Widely distributed in the State, but rare, except in 
Lake County, where this fungus was unusually common. 
2. Lecidea intropallida sp. nov. 
Thallus a continuous, smooth or slightly roughened, ash-gray and dark¬ 
ening crust; apothecia minute, 0.15 to 0.25 mm. in diameter, adnate or 
partly immersed, flesh-colored to yellow-brown, flat to slightly convex, the 
concolorous and inconspicuous exciple soon covered; hypothecium and 
hymenium pale; paraphyses sometimes distinct, but more commonly coher¬ 
ent-indistinct; asci clavate; spores simple, hyaline, ellipsoid, 5 to 7 mic. long 
and 2.5 to 3 mic. wide. 
Collected near Painesville in Lake County. On pebbles in a moist wood. 
The type specimen is deposited in the writer’s herbarium, and a cotype 
may be seen in the State Herbarium. 
3. Lecidea varians Ach. Syn. Meth. Lich. 38. 1914. 
Thallus of very minute, raised or flattened, green-gray to yellow-green 
granules, these forming a thin but continuous, smooth or granulate- 
rugose, often chinky crust, usually bordered and often decussated by black 
lines; apothecia minute, 0.12. to 0.25 mm. in diameter, often clustered 
or even conglomerate, adnate, from pale yellow to brown and Anally black, 
flat with a thin exciple to convex with covered exciple; hypothecium pale 
to pale yellow; hymenium pale below, but often yellow or blue-violet above; 
paraphyses usually coherent, distinct or indistinct; asci clavate; spores 
oviod-ellipsoid, 7 to 15 mic. long and 5 to 7. 5 mic. wide. 
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. 
4. Lecidea rupestris (Scop.) Ach. Meth. Lich. 70. 1803. (See Fig, 10), 
Lichen rupestris Scop. FI. Cam. ed. 2. 2: 363, 364. 1772. 
Thallus a continuous, moderately thick, smooth or more or less 
roughened, often chinky to subareolate, ash-gray, yellow-green, or darken- 
