6 
Geogr. area: North America, South America until Peru, Iceland, 
Ferdes, Europe, North Africa, Asia 
10. A. spinulosum (Retz.) Sw. subsp. dilatatum (Sm.) Roeper. 
Lastreea spinulosa ( intermedia Lge. Consp. Fl. Groenl. p. 187. FL. 
D. t. 3055. 
Fronds long stalked, ovate or triangular, at the base 3-pinnate, 
generally with clusters also on the lower pinni and with few or 
many short yellow glands on the underside. The inner and upper 
pinnula on the nethermost pinna smaller than the next following. 
Stalk almost as long as the frond, covered with brown scales, which 
are darkest in the middle. Indusium fimbriate. 
Am.: Kotzebue Sound, West Greenl. 60°—69° 14" (!), East Greenl. 
60°—61° 40’ (1). 
Geogr. area: North America, Iceland, Feer6ées, Europe, Asia Minor, 
Northern Asia. 
Sect. III. Hypopeltis Michx. Indusium circular. 
11. A. Lonchitis (L.) Sw. 
Lge. Consp. Fl. Groenl. p. 186. FI. D. t. 497. 
Fronds linear-lanceolate, rigid, leathery, pinnate with clusters in 
the upper part. Pinnze serrate spinous, at the base auriculate above 
and oblique below. Rachis and underside of the fronds with nume- 
rous brown scales. 
Am.: West Greenl. 60°—69° 14’ ()), East Greenl. 60°—65° 35’ (1). 
Geogr. area: North America, Iceland, Fzrées, Europe in the 
mountainous regions, Asia Minor, Caucasus, Siberia, Turkistan, Himalaya. 
3. CYSTOPTERIS Bernh. 
12. C. fragilis (L.) Bernh. 
Hook. Coll. of Arct. Pl. p. 123; Hart. Brit. Pol. Exp. p. 142; Taylor, Pl. 
coll. at Davis Str. and Baff. Bay p. 86; Reichardt, Fl. Jan Mayen p. 10; Lge 
Consp. Fl. Groenl. p.188, p. 306; Nath., Spetsb. Karly. p. 39; Trauty. Consp. 
Fl. Nov. Semlja p. 87, Fl. Kolym p. 574; Blytt, Bidrag p.17; Ledeb. FI. 
Ross. IV p. 516; Kurtz, Fl. d. Tschuktschenh. p. 482; Peary, Auxil. Exped. 
App. C. p. 8; Rothrock, Fl. of Alaska p. 460; Feilden, Nov. Zemlya p. 25. 
Fronds longstalked, generally bipinnate, lanceolate, pinnz ovate 
to lanceolate. Stalk reddish-brown below, yellow above, generally 
with few thin scales. Indusium attached under the cluster, hooded 
at the base and with a long free point, at first covering the cluster. 
Very variable, but the forms pass by numerous intermediate 
from one to the other. The more common forms are f. dentata 
Hook: fronds pinnate, pinne pinnatifid; f anthriscifolia Koch: 
fronds bipinnate to tripinnate, pinne and pinnule acute; f. cyna- 
piifolia Koch: as f. anthriscifolia but pinne and pinnul obtuse. 
