342 
OHIO BIOLOGICAL SURVEY 
1. Biatorina heerii (Hepp) Fink Cont. Nat. Herb. 14: 83. 1910. 
Biatoro heerii Hepp, Spore Flecht. Eur. pi. 16. f. 135. 1853. 
Thallus of very minute, rounded and frequently heaped granules, some¬ 
times visible under a hand lens, but often seen only in sections of the sub¬ 
stratum, rarely disappearing; apothecia minute, 0.1 to 0.3 mm. in diameter, 
adnate to sessile, flesh-colored and blackening, flat to slightly convex, the 
concolorous or darker exciple commonly persistent; hypothecium and 
hymenium pale to light brown; paraphyses distinct to coherent-indistinct; 
asci clavate; spores ellipsoid, 7 to 12 mic. long and 3 to 3.5 mic. wide. 
Collected in Butler County. On the thallus of Peltigera canina. Not 
previously reported from Ohio. So minute as to be difficult to detect. 
Consequently nothing further is known of its distribution in the State. 
2. Biatorina prasina (Fr.) Fink Cont. Nat. Herb. 14: 84. 1910. 
Micarea prasina Fr. Syst. Orb. Veg. 257. 1825. 
Thallus of minute, closely clustered or even heaped granules, these 
forming a wide-spread, frequently subleprose, green-gray to dark-olive 
crust; apothecia minute to small, 0.2 to 0.5 mm. in diameter, adnate, com¬ 
monly carneous or darkening, more or less convex and usually becoming 
convex with the exciple Anally covered; hypothecium pale or pale brown; 
hymenium pale below and commonly darker above; paraphyses coherent, 
semi-distinct to indistinct; asci clavate; spores oblong-ellipsoid, 8 to 12 mic. 
long and 3.5 to 5 mic. wide. 
Collected on Little Mountain in Lake County. On a rotten log. Not 
previously reported from Ohio, and evidently rare in the State. 
Simple spores were seen in the specimens collected, but they were 
supposed to be immature. 
3. Biatorina lentibularis (Ach.) Koerb. Syst. Lich. 191. 1855. 
Lecidea lentibularis Ach. Syn. Meth. Lich. 28. 1814. 
Thallus a thin, smooth or subtartareous, rarely rimose-areolate, ash- 
white to brown-gray, wide-spread and continuous or Anally disappearing 
crust; apothecia minute to small, 0.2 to 0.5 mm. in diameter, adnate, black, 
from flat becoming convex and often irregular, the inconspicuous exciple 
then becoming covered; hypothecium pale to darker brown; hymenium 
pale or tinged brown; paraphyses distinct to coherent-indistinct; asci clavate; 
spores oblong-ellipsoid, 8 to 11 mic. long and 2.7 to 4 mic. wide. 
A single collection was made in Highland County. On exposed cal¬ 
careous rocks. Not previously reported from Ohio, and doubtless rare in 
the State. 
An occasional 4-celled spore was seen, a transitional character pre¬ 
viously noted by Th. M. Fries. The plant is closely related to the next 
below, from which it may not be distinct. 
