11 
and persisetnt. Swamps. Common and very variable. July. Europe. 
Illustrated by Meehan, Series n. Yol 3. 
139. D. cristata Clintoniana (D. C. Eaton) Underw. Clin- 
ton’s Ceested Feen. Fronds 2-4 feet long ; pinnae ablong-lanceo- 
late, broadest at base or just above the base, 4- 6 inches long, its 
divisions 8-16 pairs ; veins not conspicuous ; sori near the midvein ; 
indusium orbicular, smooth ; sides of the sinus often overlapping. 
Swampy woods. Rare in New England, attaining its best develop- 
ment in western sections. Near Mt. Toby, Leverett, Mass., A. T. 
Beals. Hanover, N. H, July. Fine for cultivation. 
The eastern form is much smaller, with more traingular pin- 
nae, fewer pinnules, and sori near the margin, and hardly corres- 
ponds to Prof, Eaton’s description. 
One pinna illustrated by Eaton, 11 , Plate lxvi. 
140. D. (ioldieana (Hook.) Asa Gray. Goldie’s Sheild 
Feen. Fronds 2-4 feet long ; laminae broadly oval or ovate, once 
pinnate ; pinnae 6-9 inches long, deeply pinnatifld ; divisions about 
twenty pairs, slightly scythe-shaped, crenate and serrate ; sori very 
near the midvein ; indusium very larg^ orbicular, with a narrow 
sinus, its sides overlapping. Fairfield, Me., J. A. Allen. Spencer, 
Mass., Miss A. E. Tucker. Mt. Toby, and frequent west of the 
Connecticut river. Damp, rich woods in calcareous districts. July. 
Canada to Kentucky. 
V 
142. D. marginalis (L.) Asa Gray. Maeginal Shield Feen. 
Fronds 1-3 feet long ; laminae thick, smooth, ovate-oblong, twice 
pinnate, the lower pinnae pinnatifld toothed ; pinnae lanceolate, 
acuminate, broadest ju^ above the base ; sori very near the mar- 
gin of the obtuse or obtuse-falcate segments ; base of the stipe be- 
set with scales. Common on rocky shaded hillsides. North Amer- 
ica, extending from Canada to Alabama, and northwestward to the 
Rocky mountains. July. 
In dry situations this fern sometimes matures its fruit when 
only three inches in height. 
