Disk usually white- to rusty-green-pruinose 11. L. _albocaerulescens_
Disk black, scarcely pruinose 12. L. _platycarpa_

1. Lecidea coarctata (J.E. Smith) Nyl. Act. Soc. Linn. Bord. 21: 358.
1856.

_Lichen coarctatus_ J.E. Smith in Sowerby, Eng. Bot. 8: pl. 534. 1789.

Thallus of minute, scattered or clustered, rounded, angular, or minutely
and irregularly crenate, green-gray, pale brown, or more commonly
ash-white granules, sometimes passing into a subcontinuous, chinky or
areolate 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
cylindrico-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 examined
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
darkening 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 coherent-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 finally 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