Ohio Biological Survey, Bull. 10, Vol. 11, No. 6 | Page 4

to 0.4 mm. in diameter, adnate, dark brown to black, scattered or clustered, plain with a thin concolorous exciple visible, to convex with the exciple finally covered; hypothecium dark brown; hymenium pale brown; asci clavate; paraphyses coherent-indistinct; spores oblong-ellipsoid, 9 to 15 mic. long and 5 to 7 mic. wide.
Collected in Hocking County. On soil in a moist wood. Not previously reported from North America.
7. Lecidea uliginosa (Schrad.) Ach. Meth. Lich. 43. 1803.
Lichen uliginosus Schrad. Spic. Fl. Germ. 88. 1794.
Thallus of scattered, clustered, or even heaped, irregular and minute, green-olive to rust-brown, or even brown-black, somewhat raised and rarely coralloid granules, these forming a scattered or continuous crust; apothecia minute to small, 0.2 to 0.4 mm. in diameter, closely adnate or more or less immersed, often clustered, brown to black-brown, flat with the thin lighter-colored or black exciple visible, or becoming strongly convex, with the exciple finally covered; hypothecium light or darker brown; hymenium tinged yellow or brown; paraphyses closely coherent, but usually remaining distinct; asci long-clavate; spores oblong-ellipsoid, 8 to 14 mic. long and 4 to 7 mic. wide.
Collected in Preble, Butler, Warren, Adams, Fairfield, and Lake counties. On dead wood. Widely distributed in Ohio.
8. Lecidea sylvicola Koerb. Syst. Lich. 254. 1855.
Thallus of minute, irregular, somewhat flattened or more rarely hemispherical, green-gray, olive-brown, or darker granules, these forming a thin, continuous, or rarely scattered, subleprose, verrucose, or even subareolate, wide-spread crust; apothecia minute to small, 0.2 to 0.5 mm. in diameter, adnate or rarely more or less immersed, dark brown to black, flat to convex, the black exciple soon becoming covered; hypothecium brown to black-brown; hymenium pale or tinged brown; paraphyses coherent, semi-distinct to indistinct; asci clavate; spores ellipsoid, 5 to 9 mic. long and 2.5 to 4 mic. wide.
Collected in Lake, Ross, Preble, Hocking, and Butler counties. On various rocks. Not previously reported from Ohio, and apparently new to America under this name. Widely distributed in Ohio.
For possible relationship to Lecidea myriocarpoides Nyl. See "The Lichens of Minnesota" (Cont. Nat. Herb. 14: 74. 1910).
9. Lecidea flexuosa (Fr.) Nyl. Act. Soc. Linn. Bord. 21. 356. 1856.
Biatora flexuosa Fr. Vet. Akad. Handl. 1822: 267. 1822.
Thallus of small or minute, flattened or rugose, scattered or clustered, ash-grey to green-gray granules, these bursting into sorediate heaps, or forming a moderately thick, areolate crust; apothecia minute to small, 0.2 to 0.4 mm. in diameter, adnate, black, and flat, the thin, livid or darker, persistent exciple becoming flexuous; hypothecium pale or darker brown; hymenium tinged brown; paraphyses coherent, semi-distinct to indistinct; 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-sized or even larger, 0.4 to 1.5 mm. in diameter, commonly scattered, brown-black to black, rarely and obscurely white-pruinose, adnate to sessile, rounded