APPENDIX. 



FOLYPODIUM ALPESTRE, Sprengel. The Alpine Polypody. 



This plant has exactly the habit and appearance of AtTiyrium 

 Mlix-fcemina ; and hence Mr. Newman, in proposing to make it 

 the type of a new family group, has called it Pseudathyrium 

 alpestre. It is a very elegant plant, the fronds reaching from a 

 foot to a foot and a half high, and growing terminally from a 

 short creeping rhizome. The fronds are lance-shaped, narrowed 

 to the base, and twice pinnately divided. The pinnae are lan- 

 ceolate, acuminate; the pinnules lanceolate, acute, and deeply 

 pinnatifid, with oblong sharply-serrated segments. The son are 

 produced either at the sinus of the lobes of the pinnule, and 

 thus form two distinct and distant lines parallel to, and on 

 each side the midrib ; or the little lobes bear about four son, 

 disposed in a row, on each side their midvein, and so near 

 together as to become confluent into one mass. 



This species, hitherto known as a native of Switzerland, has 

 been gathered by H. C. Watson, Esq., in the Highlands of 



