4-celled, 16 to 25 mic. long and 4 to 6 mic. wide.

Collected in Hocking County. On shaded sandstone. Not previously
reported from North America.


6. Bilimbia trachona (Ach.) Oliver Lich. France 38,39. 1903.

_Verrucaria trachona_ Ach. Meth. Lich. Suppl. 16. 1803.

Thallus thin and granular, passing into smooth or leprose conditions,
thence to thickened and subareolate states, ash-colored to dark
brown-green, usually continuous over considerable areas; apothecia
minute to middle-sized, 0.4 to 0.1 mm. in diameter, from brown-black
with lighter exciple to wholly black, adnate or somewhat immersed, flat
or finally convex with the exciple at length covered; hypothecium pale
brown to black-brown; hymenium pale or rarely pale brown; paraphyses
distinct to coherent semi-distinct; asci clavate; spores
fusiform-dactyloid, 4-celled, 12 to 20 mic. long and 2.5 to 4.5 mic.
wide (Fig. 5).

Collected in several localities in Preble, Highland, and Adams counties.
On rocks, usually limestone. Also reported from Cuyahoga and Ottawa
counties. Not common, but doubtless distributed widely in the State.




Bacidia De Not. Giorn. Bot. Ital. 2: 189. 1846.