FERN FAMILY. 15 
3. Dryopteris Braunii (Spenner) Underw. Braun’s Holly-fern. 
Aspidium Braunii Spenner, Fl. Frib. r:9. 1825. 
Aspidium aculeatum var. Brauniti Doell, Rhein. FI. 
Setutiere aculeaia var. Braunti Underw. Native 
Ferns, Ed. 4, 112. 1893. 
Rootstock stout. Stipes 4-5’ long, chaffy with 
both broad and narrow brown scales; leaves ob- 
long-lanceolate, not coriaceous, 2pinnate, the 
rachis chaffy, at least below; pinnae numerous, 
close together, lanceolate or linear-lanceolate, 
broadest at the base, cut to the midvein into ovate 
or oblong pinnules; middle pinnae 2'%’--4’ long, 
the lower gradually shorter; pinnules truncate and 
nearly rectangular at the base, acute or obtuse, 
sharply toothed and beset with long soft hairs and 
scales; sori small, mostly nearer the midvein than 
the margin; indusium orbicular, peltate, entire. 
In rocky woods, Quebec to Alaska, south to Maine, 
the mountains of Pennsylvania, and to Michigan and 
British Columbia. Ascends to 5000 ft. in Vermont. Aug. 
4. Dryopteris Noveboracénsis (I,.) A.Gray. New York Fern. (Fig. 29. ) 
Polypodium Noveboracense I,. Sp. Pl. 1ogr. 
Aspidium Noveboracense Sw. Syn. Fil. 55. 
Dryopleris Noveboracensis A. Gray, Man. 630. 1848. 
Rootstock slender, widely creeping. Leaves 
lanceolate, tapering both ways from the middle, 
1°-2° long, 4/-6’ wide, membranous, long-acumi- 
nate at the apex, once pinnate ; pinnae lanceolate, 
sessile, long-acuminate, deeply pinnatifid, ciliate 
and finely pubescent beneath, 1'4’-3’ long, the 
two or more lower pairs gradually shorter and de- 
flexed, commonly distant ; segments flat, oblong, 
obtuse, the basal ones often enlarged ; veins simple 
or those of the basal lobes forked; sori not con- 
fluent, borne near the margin; indusium minute, 
reniform, delicate, gland-bearing, fixed by its sinus. 
In moist woods and thickets, Newfoundland to On- 
tario and Minnesota, south to North Carolina and 
= = Arkansas. Ascends to 5000ft. in Virginia. Sometimes 
= sweet-scented in drying. July-Sept. 
z ou) t 
5. Dryopteris Thelypteris (I,.) A. Gray. Marsh Shield-fern. (Fig. 30. ) 
Acrostichum Thelyplteris Y,. Sp. Pl. 1071. 1753 
Aspidium Thelypleris Sw.Schrad. Journ. Bot.2: 40, 1800, 
Dryopleris Thelypleris A. Gray, Man, 630. 1848. 
Rootstock slender, creeping. Leaves lanceolate 
or oblong-lanceolate, scarcely narrower at the base 
than at the middle, 1°-2'4° long, 4’—6’ wide, short- 
acuminate at the apex, membranous, once pin- 
nate; pinnae linear-lanceolate, short-stalked or 
sessile, mostly horizontal, acuminate at the apex, 
nearly truncate at the base, 114’-3/ long, slightly 
pubescent beneath, deeply pinnatifid ; segments ob- 
long, obtuse or appearing acute from the strongly 
revolute margins; veins regularly once or twice 
forked; sori crowded, 10-12 to each segment; 
indusia reniform, slightly glandular or glabrous. 
In marshes and wet woods, rarely in dry soil, New 
Brunswick to Manitoba, south to Florida, Louisiana 
and Kansas. Ascends to 2000 ft. in Vermont. Also in 
Europe and Asia, Summer. 
