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running together and producing a continuous crust. It is commonly accom- 
panied by L. symmictera Nyl. and is often and extensively suffused with the 
yellowish color characteristic of the thallus of that species. Much of the material 
identified as L. rugosa in the herbaria of this country, is merely L. subfusca. 
Lecanora atrynea (Ach.) Nyl. Flora 1872, p. 1872, nota 2. 
Outer Green Island, Casco Bay, collected by Mr. A. H. Norton. 
The specimen is that condition of the species closely simulating L. rugosa. 
The plant is almost unknown in this country, only three examples having come 
to the writer’s notice. It may be easily mistaken for L. subfusca campestris, 
but is distinct from L. coilocarpa. 
Lecanora conizaeoides Nyl. ex Cromb. Jour. Bot. 1885, p. 195. 
Bark of ancient white pines, Warren. 
Differs from L. varia in having a leprous thallus, and from L. conizaea in 
having shorter and broader spores. The species is doubtfully a valid one, and 
illustrates that tendency of Nylander’s later practice, to establish new species 
on trivial differences. 
Lecanora (. Aspicilia ) laevata (Ach.) Nyl. Flora 1872, p. 364. 
Rocks in bed of a stream Thomaston and Camden. 
The Camden plant very obscure, and called by one lichenist to whom a 
specimen was sent identified as above, Lecidea albocaerulesceus. Another author- 
ity considered it to be a Verrucaria. Both were mistaken, for the normally 
developed Thomaston example sufficiently elucidates the other. 
Lecanora (. Acarospora ) fuscata forma sinopica (Wahl.) Nyl. Scand. p. 175. 
1861. 
On intrusive granite, Mt. Megunticook, Camden, with a contiguous-areolate 
bright rusty-red thallus. On metamorphosed schist at Owl’s Head, So. Thomas- 
ton, the areOles are discrete in the manner of L. fuscata smaragdula. 
Pertusaria Westringii forma isidioidea Anzi Lich. minus rari No. 349. 
On a granite boulder, Warren. 
Without apothecia. The thallus is densely isidioid-ramulose, tartareous, 
easily separable from the substratum. K — -, C — . Extensively spreading and 
sordid- whitish, the plant is conspicuous. 
Unrecorded from America previously. 
Pertusaria glomerata sub-sp. trochiscea (Norm.) Th. Fr. Scand. p. 315. 
1871. 
Thallus incrusting, thin, limited, glaucous or plumbeous, the margin lighter, 
K — , C — . Apothecia small (about 1 mm.) compressed-globose, pale, with from 
one to three depressed ostioles. Spores, four in each ascus, halonate, ellipsoid, 
the terminations sometimes acute, 100-140 x 35-47^, hyaline or brown, asci 
inflated-clavate. 
On mosses, and communicating to dead wood. Rockland. 
Fries states that in the Swedish plant the apothecia are numerous and by 
mutual compression angular. In ours the apothecia are scattered. Spore 
measurements given by Fries 42-84 x 24-34^. 
New to America. 
