160 Rhodora [OCTOBER 
his description is copied from Cornut. His plant is therefore also 
identified by me as Species No. 2. 
5. Coming next to the first plant referred to under B. we find a 
plant from New England with serrate lanceolate-ovate leaves called 
for. This specimen is in the British Museum and a photograph has 
been identified by Prof. Wiegand as Species No. 1. "This identifica- 
tion would seem to me to be correct. 
6. Hermann's plate next cited by Linnaeus is likewise identified 
by Prof. Wiegand as Species No. 1. The description certainly 
strongly points towards Species No. 1, and the plate also seems to 
me undoubtedly to belong to that plant. 
7. Morrison's figure is to me much more doubtful, but I would 
agree with Prof. Wiegand that it also probably belongs to Species 
No. 1. 
8. The citation from Ray is also here referred by Prof. Wiegand 
because of the number of leaves shaped like a nettle and the spotted 
stem. In tbis reference to Species No. 1 I would also agree. 
So summarizing the references given by Linnaeus, we find the 
first two refer to Species No. 3, the second two refer to Species No. 
2, and all under 8 refer to Species No. 1. If we were left here we 
would have a rather bad problem to solve, as to the proper applica- 
tion of the name of Linnaeus; but fortunately Linnaeus supplied a 
description of his own and from it we can be sure that he had an actual 
specimen before him. The more one reads this description the more 
one feels sure that it is based almost entirely on Species No. 1. Surely 
the phrases *caules * * * punctis linearibus longitudinalibus purpur- 
ascentibus. Folia terna, quaterna * * lato-lanceolata s. lanceolato- 
ovata, serrata, scabriuscula. Calyces florum incarnati Flosculi 
octo," can only refer to this plant. The only part of the descrip- 
tion not applicable is the one word that the leaves are sometimes in 
sixes. It can be surmised however that Linnaeus inserted this 
phrase from Colden in the desire to make his description complete 
and not being aware that he had more than one plant to deal with. 
It would seem that Linnaeus had the Hortus Cliffortianus plant 
before him when he drew his description as surmised by Prof. Wie- 
gand. I must confess that with this description before us, and about 
the applicability of which to Species No. 1 Prof. Wiegand has no 
more doubt than have I, it is not possible for me to follow Pref. Wie- 
gand in applying the name Eupatorium purpureum to Species No. 3. 
