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cia, but toward the circumference distinct, very narrow, more or less divided 
and at the apices expanded and cut-crenate, rusty-orange. Apothecia small to 
very small, disk concolorous with the thallus and possessing a lighter colored 
obtuse margin. Spores, eight in each ascus, ellipsoid or fusiform-ellipsoid, bil- 
locular with approximate sporoblasts, or polar-bilocular with connecting canal, 
14-17 x 7 -iom, paraphyses distinct, sub-discrete, asci inflated-clavate. 
On rocks sprayed by the sea-water. Rockport. 
Entirely like Zahlbruckner’s No. 765, “Kryptogamae Exciccatae.” I have 
seen no description of the plant, but the one given above is drawn from Zahl- 
bruckner’s specimen. The plant at once resembles L. murorum and reduced 
conditions of L. elegans. Previously unreported from America. 
Lecanora ( Candelaria ) epixantha (Ach.) Nyl. Soc. Linn. Bord. t. XXV. 1864 
p. 8. 
Thallus in Knox County specimens obsolete. The apothecia are small, 
scattered, sessile, plane or slightly convex, yellowish varying to dusky, with a 
commonly crenulate or entire thalline margin lighter in color than the disk. 
Spores, eight in each ascus, simp e or with polar loculi, 10-12 x 5-8 /*. On crys- 
talline limestone. Rockland. 
Near L. vitellina. Reported from the west coast and probably common 
throughout the United States, but unrecognized. 
Lecanora galactina Ach. Lich. Univ. p. 424. 1810. 
On brick walls of an old house. Rockland. 
Without apothecia. Thallus filmy, sordid-whitish and here and there 
greenish. Dr. Lesdain kindly supplied me with a name for this plant, and so 
far as is ascertainable this is the first record for America. 
Lecanora galactina forma verrucosa Leight. Lich. FI. G. Brit. Ed. 3, p. 190. 
1879. 
Thallus white, verrucose-pulvinate, somewhat incrassated. Apothecia 
small, crowded. 
Calciferous slate, Rockport. New to America. 
Lecanora subfusca var. campestris Schaer. Enum. p. 75. 1850. 
On various rocks near the sea, or on the shores of inland tidal streams. 
Perfectly characteristic, except that the apothecia are larger than in the de- 
scribed European plant. The same thing is found in the localities visited grow- 
ing on the trunks of trees near the base, and it was also found on dead decorti- 
cated wood at times inundated. On decorticated wood at the same station 
with the last, but high above the water, occurs a form with small apothecia. 
The larger apothecia developed at lower levels evidently owe their size to a moist 
environment. Apothecia 4 mm. in diameter have been noted. 
Lecanora rugosa (Pers.) Nyl. Flora 1872, p. 250. 
On “fish-flakes” and old fish-houses, Matinicus Island. 
This is exactly the plant described in Crombie’s British Lichens Pt. I, p. 
412, and its erection into a species is fully warranted. On the boards of the old 
fish-houses the circumference of the determinate thallus is marked by a thin 
whitish macular ring, produced by an extension of the hyphema within the 
fibers of the wood. On the fish-flakes the plant grows luxuriantly, the thalli 
