FERN FAMILY. Il 
4. Woodsia scopulina D. C. Eaton. 
Rocky Mountain Woodsia. (Fig. 19.) 
Woodsia scopulina D. C. Eaton, Can. Nat. 2: go. 
1865. 
Rootstock short, creeping, densely chaffy. Stipes 
2/-4’ long, not jointed, puberulent like the rachis 
and lower surface of the leaf with minute flattened 
hairs and stalked glands; leaves lanceolate, 6’-12’ 
long, tapering from about the middle to both ends ; 
pinnae numerous, oblong-ovate, pinnatifid into 
10-16 oblong toothed segments ; indusium hidden 
beneath the sporanges, very deeply cleft into short 
cilia with cylindric cells 
In crevices of rocks, northern Minnesota and west- 
ern Ontario to Oregon, south in the Rocky Mountains 
to Arizona and in the Sierra Nevada to California. 
Summer. 
5. Woodsia Oregana D. C. Eaton. Oregon Woodsia. (Fig. 20. ) 
Woodsta Oregana D. C. Eaton, Can. Nat.2:90. 1865. 
Woodsia obtusa var. Lyallii Hook. Syn. Fil. 48. 1868. 
Rootstock short. Stipes and leaves glabrous 
throughont; stipes not jointed, brownish below; 
leaves 2/-10’ long, elliptic-lanceolate, the sterile 
shorter than the fertile ; pinnae triangular-oblong, 
obtuse, pinnatifid; lower pinnae reduced in size 
and somewhat remote from the others; rachis 
straw-colored ; segments oblong or ovate, dentate 
or crenate, the teeth often reflexed and covering 
the submarginal sori; indusia minute, concealed 
by the sporanges, divided almost to the centre into 
a few beaded hairs 
On rocks, northern Michigan and Minnesota and 
Manitoba to British Columbia, south in the Rocky 
Mountains to Arizona and in the Sierra Nevada to Cal- 
ifornia. July-Aug. 
6. Woodsia obtusa (Spreng.) Torr. Blunt-lobed Woodsia. (Fig. 21.) 
Polypodium obtusum Spreng. Anleit. 92. 41804. 
Hy popeltis obtusa Torr. Comp. 380. 1824. 
Woodsia obtusa Torr. Cat. Pl. in Geol. Rep. N. Y. 195. 
1840. 
Rootstock short, creeping. Stipes not jointed, 
pale green, 3/-6’ long; leaves broadly lanceolate, 
‘-15/ long, minutely glandular-pubescent, nearly 
2-pinnate ; pinnae rather remote, triangular-ovate, 
or oblong, pinnately parted into obtuse oblong 
crenate-dentate segments; veins forked and _ bear- 
ing the sori on or near the minutely toothed lobes; 
indusium conspicuous, at first enclosing the spor- 
anges, at length splitting into several jagged lobes, 
which are much wider than those in any of the pre- 
ceding species. 
On rocks, Nova Scotia (according to Macoun) and 
Maine to northern New York, Wisconsin and British 
Columbia, south to Georgia, Alabama, the Indian Ter- 
titory and Arizona. Ascends to 2200 ft. in Virginia. 
July-Aug. 
