Ohio Biological Survey, Bull. 10, Vol. 11, No. 6 | Page 7

widely in the State.

Bacidia De Not. Giorn. Bot. Ital. 2: 189. 1846.
Thallus granulose, passing into chinky, verrucose, subareolate and subsquamulose conditions, seldom or never disappearing; apothecia minute to large, adnate or rarely immersed more or less, exciple usually weak and becoming covered; hypothecium commonly some shade of yellow or brown; hymenium pale to light brown; spores hyaline, acicular, varying from 4- to 16-celled, often curved or variously twisted, usually 8 in each ascus.
KEY TO THE SPECIES OF BACIDIA
On rocks. Spores hamate or spirally twisted 7. B. umbrina Spores straight or only slightly curved. Thallus ash- or green-gray 5. B. inundata Thallus olive or darker 1. B. egenuloidea On bark. Spores less than 40 mic. in length 6. B. incompta Spores 40 to 70 mic. long. Apothecia flesh-yellow to red-brown 2. B. rubella Apothecia brown to black. Apothecia usually brown with a striate, usually pruinose margin 3. B. fuscorubella Apothecia usually black Of dark brown, without striate and pruinose margin 4. B. schweinitzii
1. Bacidia egenuloidea sp. nov.
Thallus of minute, crowded granules, forming a rather thick, conspicuous, rugose and obscurely chinky, dirt-olive and darkening, wide-spread crust; apothecia minute to small, 0.25 to 0.4 mm. in diameter, yellow-brown and darkening, adnate-sessile, flat with an elevated, darker exciple; hypothecium and hymenium pale or tinged brown; paraphyses coherent, semi-distinct; asci clavate; spores hyaline obscurely several-celled, variously curved, 25 to 40 mic. long and 0.75 to 1.25 mic. wide.
Collected in Preble County. On granite in a damp field near West Alexandria. The type specimen is deposited in the writer's herbarium, and a cotype may be found in the State Herbarium.
2. Bacidia rubella (Hoffm.) Mass. Ric. Lich. 118. f. 231. 1852.
Verrucaria rubella Hoffm. Deutsch. Fl. 2: 174. 1795.
Thallus of minute, scattered or crowed granules, these frequently becoming compacted into a subleprose or more or less verrucose or chinky, ash- to green-gray, moderately thick or thinner, continuous or sometimes scattered and disappearing crust (Fig. 2); apothecia small to large, 0.5 to 1.35 mm. in diameter, sessile to adnate, flesh-yellow to red-brown, flat with a rather thick and lighter-colored exciple, or becoming convex with the exciple finally covered; hypothecium pale yellow to brown; hymenium pale yellow; paraphyses coherent, semi-distinct to indistinct; asci long clavate; spores about 8- to 16-celled, 45 to 65 mic. long and 3 to 4 mic. wide.
Collected in Butler, Highland, Adams, and Preble counties. Also examined from Franklin County. On bark. Widely distributed in Ohio, but not common.
3. Bacidia fuscorubella (Hoffm.) Arn. Flora 54: 55. 1871.
Verrucaria fuscorubella Hoffm. Deutsch. Fl. 2: 175. 1795.
Thallus of minute, crowded or scattered granules, these forming a usually conspicuous and often rugose and chinky, green-gray or darker, frequently wide-spread, rarely disappearing crust; apothecia small to large, 0.6 to 1.5 mm. in diameter, pale to darker brown and finally black, adnate or sessile, flat with an elevated, and sometimes transversely striate, and usually pruinose exciple, less frequently becoming convex with the exciple rarely becoming covered; hypothecium yellow to yellow-brown; hymenium pale yellow; paraphyses coherent, semi-distinct to indistinct; asci long-clavate; spores about 7- to 14-celled, 40 to 70 mic. long and 3 to 5 mic. wide.
Collected in Butler and Adams counties. Also reported from Champaign and Hamilton counties. On bark. This fungus appears to be rare in Ohio.
In one specimen, some of the disks are partly or wholly pruinose, but the plant seemed nearer to this than to Bacidia suffusa (Fr.) Fink.
4. Bacidia schweinitzii (Tuck.) Fink Cont. Nat. Herb. 14: 89. 1910.
Biatora schweinitzii Tuck. in Darl Fl. Cestr. ed. 3. 447. 1853.
Thallus thin and inconspicuous, or becoming thick and more prominent, composed of rounded and often crowded or even heaped granules, these frequently compacted into a continuous or scattered, verrucose and often chinky, green-gray to olivaceous crust; apothecia small to large, 0.6 to 1.75 mm. in diameter, dark brown to black, adnate or sessile, flat or slightly convex, the concolorous or lighter exciple frequently becoming flexuous; hypothecium pale yellow to dark brown; hymenium pale yellow; paraphyses coherent, distinct to semi-distinct: asci long-clavate; spores about 7- to 15-celled, 40 to 70 mic. long and 2.5 to 3.5 mic. wide.
Collected in Fairfield, Hocking, and Adams counties. On bark. Evidently a rare fungus in Ohio.
5. Bacidia inundata (Fr.) Koerb. Syst. Lich. 187. 1855.
Biatora inundata Fr. Vet. Akad. Handl. 1822: 270. 1822.
Thallus of minute granules, these usually compacted into a thin or rarely thicker, granulate, chinky, or subareolate, ash- or green-gray or darkening, commonly wide-spread, continuous or scattered crust; apothecia minute to middle-sized, 0.2 to 0.75 mm. in diameter, pale brown to finally black, adnate or rarely more or less immersed, usually flat and bordered by the commonly lighter colored exciple, rarely becoming convex, the exciple then finally covered; hypothecium pale to brown; hymenium pale to pale brown; paraphyses coherent, semi-distinct to indistinct; asci clavate to long-clavate, spores 4- to 8-celled, 15 to 40 mic. long and