108 Rhodora [June 
field had recently come in and if he had ever seen it elsewhere, he 
assured me that the “ Blue-weed”’ has been frequent about Lakewood 
for twenty-five years and is said to be elsewhere in Monmouth County. 
Such information may be taken for what it is worth, but the frequence 
and thorough establishment of the plant along the River Road south 
of Lakewood is at least suggestive of the possible verity of this fuller 
statement. 
ACADEMY OF NATURAL SCIENCES OF PHILADELPHIA. 
TSUGA AMERICANA (MILL.) FARWELL, A FINAL WORD. 
OLIVER A. FARWELL. 
In Ruopona for October, 1918, pages 185-8, Mr. Tidestrom argues 
for the retention of the name Tsuga Canadensis (L.) Carr. for the 
Hemlock Spruce on the grounds that Linnaeus, in 1739, assisted in 
writing up the description of the plant for Gronovius’s Flora Virginica, 
1743, and hence was familiar with the species and therefore the element 
Linnaeus knew should be considered as the type; also that the word 
submembranaceis of the description excludes the White Spruce from 
consideration. He fails to prove, however, that the White Spruce 
was not equally known to Linnaeus; he only supposes that it was not. 
He says:— “That Linnaeus meant that his P. Canadensis should 
stand for a Spruce as we understand this genus is out of the question.” 
Since Linnaeus included the “Spruce” as an element of his Pinus 
Canadensis it is rather astonishing, to say the least, to learn, “That 
Linnaeus meant it, is out of the question.” Philip Miller, a contem- 
porary of Linnaeus and a botanist of no mean ability, ranking perhaps 
in his day as second only to the distinguished Swede, and one who 
probably knew as much as any about the then current concept of 
species, certainly understood Pinus Canadensis Linn. to be the White 
Spruce. Note the description of each:— 
Pinus Canapensis, Linn. Apres CANADENSIS, Miller. 
Pinus foliis solitariis linearibus. Abies (Canadensis) foliis linearibus 
obtusiusculis submembranaceis. obtusiusculis submembranaceis. 
With the exception of the word solitariis these descriptions are identi- 
cal and it is self-evident that Miller adopted the specific name and 
