714 Aspidium spinulosum and its Varieties. {[ November, 
tion as a basis for a re-arrangement of the different forms of A. spinulosum and cris- 
tatum : 
I. ASPIDIUM SPINULOSUM Swz. 
B. var. dilatatum Eaton, in Gray’s Manual.—Embracing only the extreme 
northern form. 
2. ASPIDIUM AMERICANUM. (A. spinulosum Willd., A. spinulosum, var. inter- 
medium Eaton.) 
o 3 feet or more high; scales of the stipe pale or dark brown, often with 
darker centers, ovate or ovate-acuminate below, paler, postid lanceolate, 
and scattered along the main and secondary rachises above; frond ovate or 
oblong-lanceolate, twice or thrice pinnate; pinnz s fvidiig lanceolate or 
ovate-lanceolate, acuminate, lower pair sometimes sei saree triangular-ovate, 
with the lower pinnules elongated; pinnules oblong-ovate, acute, lower series 
longest, more or less incised, or cut clear to the rachis becoming again pin 
nate; lobes -oo Ses ae ESEA toothed. Frond dark, often light 
green, stipe, rachises and veins sometim aiy under surface minutely 
glandular, sori ial Nar glandula 
3. ASPIDIUM BOOTTII Tuckerman. Aspidium pacha var. Boottii Eaton, in 
Gray’ 
4. ASPIDIUM CRISTATUM Sw 
B: Okai Bidk. 
sga var. Floridanum Eaton. 
I offer the following remarks on the above arrangement : 
It is with considerable hesitation that I venture to recommend 
a new name for a fern so long known as a form of A. spinulosum 
under the name of intermedium, as I do not wish to appear to 
show any disposition to multiply species unnecessarily, or to dis- 
turb established and familiar names; but in reéstablishing the 
present form as a species there appears to be no alternative 
between doing this and adopting Willdenow’s name of A. inter- 
medium—a name heretofore improperly applied to our form. But 
that author’s name does not belong here, for his description of A. 
intermedium does not contain a word in regard to the glandular 
indusiums and under surface, while, on the other hand, his 
description of A. spinulosum does, thus exactly reversing the usual 
arrangement. 
For this reason we cannot write A. intermedium Willd., and as 
Swartz’s name of A. spinulosum takes precedence and belongs to 
another form, we are also debarred from writing A. spinulo- 
sum Willd., thus leaving our plant without aname. Therefore 
we have no alternative but to provide a new one, and in selecting 
the present name I have taken into consideration the fact that 
our American form has always been regarded as peculiar to this 
a fact which the pronn: name ree expresses. 
