istinct; asci cylindrico-clavate; spores oblong-ellipsoid, 5 to 10
mic. long and 3 to 5 mic. wide.

Collected in Preble, Adams, Ross, and Butler counties. On dead wood. Not
previously reported from Ohio, and rare, though probably distributed
widely in the State.

The spores are slightly below normal size in our specimens.

10. Lecidea enteroleuca Ach. Lich. Univ. 177. 1810.

Thallus thin or becoming moderately thick, smooth or more often
granulate, chinky or areolate, the granules or verrucae rarely becoming
heaped in the thicker forms, ash- to green-gray, occurring in rounded
areas, or irregularly and often widely spread over the substratum;
apothecia minute to middle-sized, 0.35 to 1.2 mm. in diameter, adnate,
black, flat to more commonly convex, the frequently flexuous exciple
often becoming covered; hypothecium pale to dark brown; hymenium pale
below, but usually more or less colored above; paraphyses distinct, but
often more or less coherent; asci clavate; spores ovoid-ellipsoid, 8 to
17 mic. long and 5 to 9 mic. wide (Fig. 3).

Collected in Lake, Adams, and Hocking counties. On bark and rocks. Not
previously reported from Ohio. Rare, but doubtless distributed widely in
the State.

11. Lecidea albocaerulescens (Wulf.) Schaer. Lich. Helv. Spic. 3: 142.
1828.

_Lichen albocaerulescens_ Wulf. in Jacq. Coll. Bot. 2: 184. pl. 5. f. 1.
1788.

Thallus smooth or somewhat rough, more or less chinky or becoming
obscurely small-areolate, ash- to green-gray, or becoming olivaceous,
spreading over the substratum as a continuous, moderately thick crust;
apothecia small to large, 0.5 to 1.5 mm. in diameter, adnate or more or
less immersed, usually flat, almost always white or rusty-green
pruinose, the black exciple rarely becoming covered; hypothecium brown
to black-brown; hymenium commonly pale; paraphyses distinct, but usually
coherent; asci clavate to inflated-clavate; spores ovoid-ellipsoid, 15
to 24 mic. long and 7 to 10 mic. wide.

Collected in Preble, Hocking, and Lake counties. Also examined from
Lawrence County. On rocks other than calcareous. Not previously reported
from Ohio. Rare, but apparently distributed widely in the State.

12. Lecidea platycarpa Ach. Lich. Univ. 173. pl. 2. f. 5. 1810.

Thallus a thin, obscurely or more or less plainly roughened, usually
chinky to subareolate, ash- to green-gray, continuous or more or less
scattered, sometimes disappearing crust; apothecia small to middle-size