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Plate XII 
1. The Acharian type of Parmelia usneoides at Helsingfors (1-3 nat. size). 
2. The Linnean type of Lichen usnea at London (2-3 nat. size). 
3. The Nylander type of Ramalina usneoides var. usneoidella at Paris {}4 
nat. size). 
Plate XIII 
1. The Nylander type of Ramalina alludens at Helsingfors (nat. size). 
2. The Nylander type of Ramalina anceps at. Paris {pi nat. size). 
3. The Nylander type of Ramalina historta at Helsingfors (nat. size). 
NOTES ON NORTH AMERICAN HEPATICAE. V 
Alexander W. Evans 
Seven of the species noted in the present paper represent additions to the 
hepatic flora of the United States, while the other three are introduced to record 
extensions of range. Of the seven additions, six were found in Florida and one 
in California. Four of the Florida species belong to the Lejeuneae, so that thirty- 
three representatives of this group are now definitely known from the state. 
1. Metzgeria uncigera Evans, Ann. Bot. 24 : 276. f. 1-3: 1910. 
Collected in December, 1913, at Robinson Spring, eight miles south of San- 
ford, Florida, on a tree trunk six feet above the ground, by S. Rapp {No. 73). 
New to the United States and the second recorded station for the species, the 
type locality being Mount Morales, near Utuado, Porto Rico, where the plant 
was found by M. A. Howe, in March, 1906 {No. 1128). The Florida specimens 
are apparently quite destitute of sexual organs, but show a vigorous develop- 
ment of the characteristic marginal gemmae with their hooked hairs. For a 
full description of these interesting reproductive organs, reference may be made 
to the paper quoted above. In the original description of M. uncigera, the 
wings of the thallus are said to lack surface-hairs altogether, and this feature is 
emphasized in pointing out the differential characters between the species and 
M. furcata (L.) Dumort. The Florida specimens show occasional hairs on the 
postical surface of the thallus-wings. This might at first throw doubt on the 
determination, but a re-examination of the type-material brings out the fact 
that surface-hairs are occasionally present even there, although much rarer than 
in the Florida material. The original description, therefore, should be slightly 
amended in this respect, so as to read, hairs few and irregularly scattered, 
borne on the margin, on the postical surface of the costa, and, more rarely, on the 
postical surface of the wings. 
2. Fossombronia salina Lindb. Acta Soc. Sci. Fenn. 10 : 533. 1875. 
Evans, Rhodora 3 : 7-10, with text-figure. 1901. 
Collected in May, 1913, at Glenolden, Pennsylvania, on clay soil in an old 
rye field', by A. F. K. Krout. In specimens collected on May 11 the spores were 
in excellent condition; in specimens collected on May 19, most of the spores had 
been disseminated. In the note referred to above, the writer recorded F. salina 
from Connecticut, New Jersey, and Florida. In addition to the station reported 
