FERNS OF THE LAKE GEORGE FLoRa: I 89 
An extremely variable species as to size, and the 
shape and cutting of the evergreen sterile frond. . 
BoTRYCHIUM DISSECTUM Spreng. 
Dry pastures.and open woods; scarce. 
Vaughns; west of Kingsbury; southern W. Fort Ann; 
east of Fort Ann. 
Usually associated with B. obliquum and intermediate 
forms are found approaching that species. The sterile 
frond is laciniate or finely dissected and varies in tex- 
ture, the more typical plants being quite thin. 
BotrYCHIUM MATRICARIAE (Schrank) Spreng. 
“South Corinth. August.” (Peck) in N. Y. State 
Mus. Bull. 67: 21. 1903; Vaughns, rare. 
BotrycHIUM SILAIFOLIUM Presl 
Assembly Point (Hulst); Vaughns, Sept. 30, 1903, 
det. B. D. Gilbert. This fern, formerly known as B. 
ternatum, var. intermedium, grows with B. obliquum: 
and matures its fruit two or three weeks earlier than 
that species. 
The large form of B. silaifolium, known as B. obliquum 
Habereri Gilbert, was collected in open woods at 
Vaughns, Sept. 30, 1903. These specimens were re- 
ferred to this variety by B. D. Gilbert, who said, this 
was the form Prof. Eaton years ago referred to Robert 
Brown’s B. australe. This large form has also been 
found at Silver Bay (Kemp); northwest Hartford; 
north of Hudson Falls; and near Fort Edward reser- 
voir. 
BorrycuruM VIRGINIANUM (L.) Sw. 
Moist rich woods; not uncommon. une-Aug. 3 
A plant, at Vaughns, was collected June 17, 1904, 
which was 31 inches high; with the fertile part 8 inches 
long and the sterile segment 16 by 9 inches. The 
young plant begins to unroll about the middle of May. 
