72 
H. O. JUEL 
species, described by Linnaeus, and of these two are founded 
upon specimens of Kalm’s. 
As a summary of the statements given above we get the 
following totals: Linnaeus knew about 780 species of plants 
chacteristic of N. America, and of these more than 100 were 
introduced into science by him. Of these new species nearly 60 
were founded upon specimens collected by Kalm. Of course 
these numbers refer to the conception of species which was cur¬ 
rent at the time of Linnaeus. Nowadays some of those Lin- 
naean species have been rejected as being of doubtful signifi¬ 
cance or are considered as mere varieties. 
Here follows a list of the N. American species of plants 
which Linnaeus has described without quoting any earlier author, 
or where such a quotation is followed by a query. It is often 
somewhat difficult to identify a species of an earlier author with 
a certain species as we conceive it, and if Linnaeus put a query 
after such a synonym, I think it is of little value and it is better 
to leave it out of consideration. In this list the modern names 
are printed in italics. The name given by Linnaeus is followed 
by a quotation from the work in which Linnaeus first described 
the plant. The date here given is therefore not always the date 
of the specific name, which of course cannot be earlier than 
1 7 5 3 . The personal names mentioned in these quotations do 
not denote authors, but persons on whose specimens the species 
were based. 
North American plants first described by Linnaeus. 
Filices. 
Dryopteris marginalis (L.) A. Gr. = Polypodium m. L. Sp. pi. 1753: »in Canada. 
Kalm.» 
Dryopteris ?ioveborace?isis (L.) A. Gr. — Polypodium n. L. Sp. pi. 1753: »in Canada. 
Kalm.» 
Osmunda Claytofiiana L. Sp. pi. 1753: »Clayt.» 
Woodwardia virginica (L.) Sm. = Blechnum v. L. Mant. II 1771. 
Araceae. 
Peltandra virginica (L.) Kunth = Arum v. L. PI. Cliff. 1737: »D. 
Gronov.» 
