SWISS FERNS. 127 



A. (Polystichum) Lonchitis, Holly-Fern. Frouds in tufts 

 a foot or more high, stiff, leathery, on a short and very scaly 

 foot-stalk, simply pinnate, with entire, curved, segments 

 having thorn-like hairs. Alps and Jura. 



A. (Polystichum) lobatum very much resembles the 

 above in some of its forms, and is distinguished by having 

 the lower lobes prolonged into auricles. The fronds are also 

 twice pinnate, and from one to two feet high. Forests. 



A. Braunii has soft membranous fronds contracted at the 

 base, lobes of the segments almost sessile, large and 

 strongly veined, prolonged in a blunt auricle. Hasli, Engel- 

 berg. Rare, not British. 



A. (Lastrea) Thelypteris. Fronds not tufted, pinnate, 

 bright green, one to two feet high ; stem slender, without 

 scales ; pinnas deeply pinnatitid ; lobes triangular, lanceo- 

 late ; sori in lines on the margin, at last confluent. Turfy 

 bogs. 



A. (Lastrea) Oreopteris, or montanum. Sweet Mountain- 

 Fern. Underground root thick and tufting ; fronds rising 

 in a circle two to three feet high on short scaly stalks, 

 oblong, lanceolate, and pinnate ; lobes quite entire, con- 

 fluent at the base, sprinkled on the back with resinous 

 glands which give a pleasant fragrance when rubbed. 

 Forests. 



A. (Lastrea) Filix-mas, Male Fern. Fronds on stems 

 covered with brown scales, often loose and shaggy, in large 



