196 Rhodora [SEPTEMBER 
It corresponds exactly to the similarly named “variety” of A. 
Filix-femina. The following is a list of the specimens of this form in 
the Gray Herbarium: 
Marne: rocky bank of woodland stream, Buckfield, July 23, 1908, 
dJ. C. Parlin no. 2617. 
VERMONT: in sun, edge of woods, Windham, August 30, 1902, 
W. H. Blanchard (type); Westmore, August 6, 1908, E. J. Winslow 
no. 21 (varying but slightly from the normal). 
MassacuusetTts: low rich woods, West Roxbury, August 2, 1902, 
F. G. Floyd no. 1075. 
New York: under tree in garden, Gouveneur, July 1900, E. C. 
Anthony. 
FF. Pinnules oblique to the rachis of the pinna and prominently 
decurrent, though usually not connected by a membraneous 
wing, teeth of pinnules acute. ..A. angustum forma elegans. 
ATHYRIUM ANGUSTUM forma elegans (Gilbert), new comb. 
a rds filix-foemina elegans Gilbert, List of N. A. Pterid. 33 
A somewhat rare form with markedly oblique and decurrent widely 
spaced pinnules, the basal anterior pinnule usually much larger than 
the others. The following specimens in the Gray Herbarium are 
definitely of this form: 
Marne: Bar Harbor, herb. of Francis H. Peabody. 
New Hampsuire: Nottingham, July 17, 1900, A. A. Eaton no. 422. 
RuHopE Istanp: Cranston, July 14, 1884, J. F. Collins. 
New York: Trout Lake, Herman, September 4, 1900, herb. of 
E. C. Anthony. 
ONTARIO: Owen Sound, Mrs. Roy (an exceedingly large specimen, 
nearly thrice pinnate, but showing the general character of this 
form). 
It is notable that certain ferns of eastern Asia seem to be identical 
with certain of the American forms of A. angustum, having small dark 
scales similar in structure to those of the American plant, fronds mod- 
erately reduced downward, and sori with the characteristics of A. 
angustum. None of these specimens shows any part of the rhizome, 
so that it is impossible to say definitely whether A. angustum really 
reappears in eastern Asia like so many other east American plants, 
or whether it has there merely a representative species of very close 
affinity. 
The specimens in question are: Northern China, 1910, Wm. Purdom 
no. 48, apparently A. angustum var. typicum; ad. fl. Schilka, Dahuria, 
Turczaninow, labelled “ Asplenium Filix Feomina Bernh. var. tripina- 
tum Rupr.,” evidently some of the material referred by Ruprecht 
