PHEGOPTERIS. 
23 
oblong, small, entire or minutely scalloped, enlarged at the base on the 
upper side, middle ones largest, lower smaller and bent down. 4 to 8 
inches high. {A. trkhomanoides, Mett.; A. eheneum, Eaton, Mex. Bound.) 
Texas to Florida. Rare. Resembles A. ebeneum closely. 
65. A. viriile, Hudson. (The A.) 
Stalks reddish-purple at base; rachis green, narrowly winged, with 
a few black hairs: frond linear, not evergreen, thin ; pinnae very broadly 
ovate or oblong, deeply scalloped ; fruit-dots i to 3 on each side of the 
midrib. Rootstock slender, creeping. Scales at base of the stalk lanceo- 
late, .acuminate, with beautiful black striae and meshes. 
Northern Rocky Mountains and eastward. Clefts of rocks. 
66. A. septeiltriOMale, Hoffmann. (The A. of the north.) 
Fronds in dense tufts, grass-like; with 2 to 5 long -linear, acute 
divisions. Fruit-dots long, two or three to a division, next to the mar- 
gin. 2 to 4 inches high. Closely resembles a bunch of grass: unlike 
any other fern of our region. 
Colorado and New Mexico. Europe and India. Rare. 
* * Fruit- dots tisitally curved or horse-shoe-shaped. Large ferns. 
67. A. Filix-foBBlilia, Bernhardi. {^Female- Fern.) 
Fronds once- to tri-pinnate, thin, acuminate; fruit-dots near the 
midrib. 2 to 4 feet high. 
Variety anglistimi, Eaton. (The narrow variety.) 
Fronds almost bi-pinnate; pinnae lanceolate, bent upwards ; divisions 
oblong, scalloped or toothed. Fruit-dots very many, i to 3 feet high. 
California, Utah and eastward. In damp, shady places. 
68. Variety latifolilllll. Hooker. (The broad-leaved variety.) 
Frond almost bi-pinnate, oblong-lanceolate; pinnae oblong-linear. 
Secondary rachis winged. Final divisions broadly ovate, obtuse, often 
doubly serrate. 2 to 3 feet high. 
Oregon. In damp, shady places. 
69. Variety coniimiiie, Eaton. (The coininon variety.) 
Frond bi-pinnate; pinnae long; pinnules oblong-lanceolate, pointed, 
cut or serrate. About 2 feet high. 
Throughout the United States. Damp, shady places. 
70. Variety cyclosOlTllll, Ruprecht. (The variety with rounded 
fruit-dots . ) 
Fronds very large, about 5 feet high, bi-pinnate; pinnules almost 
parted; fruit-dots roundish ; indusium very short, small. 
Oregon and Vermont. Damp, shady places. 
TRIBE VI -ASPIDIE^. 
XII. PHEGOPTEEIS, Fee. Beech-Fern. 
Stalks not jointed to the rootstock. Our ferns have free veins; fruit- 
dots near the margin; fronds very thin and papery, bright-green. This 
was formerly united with Polypodium. (Greek for beech-fer?i.) 
A^^genus of about 100 species, 4 North American. 
