102 



Asple nium Filix-femina. — The three varieties so well known are 

 described as below, but referred without hesitation to one species. 



" 29. A. Filix-femina. 



" a. molle. Athyr. molle, Roth. Frond small, a foot high ; pinnae 

 longish, incised, decurrent at the axis ; segments usually with one 

 tooth. In the Condethal at Winningen, Wirtgen; Wiedbachthal, 

 Brahts ; Friesdorf, near Bonn, Eberwein. 



"|3. ovatum. Athyr. ovatum, Roth. Frond larger; pinnae approxi- 

 mate, oval, cut, decurrent at the axis ; segments mostly 2-3 dentate. 

 Condethal and Belthal, at or near Winningen, Wirtgen. 



" y. elatum. Ath. elatuui, Roth. Frond 2 — 2j ft. high ; pinnae dis- 

 tant, pinnatifid, very little, or not at all decurrent; segments 2-4 den- 

 tate. A beautiful and well-marked form. In fertile soil of shady 

 alpine woods; common." — p. 41. 



Asplenium Breyiiii=germ<micum, Weiss, &c. ; alternifolium of most 

 modern authors. 



Ruta-muraria. 



Adiantum-nigrum. — Pleasantly divided into three named 



varieties — pinnatum, bipinnatum, tripinnatum. 



septentrionale. 



Scolopendrium officinarum = Scolopendrium vulgare of authors. 



Pteris aquilina. 



Blechnum spicant. 



Struthiopteris germanica . 



Osmunda regalis. 



Botrychium lunar ia. 



Ophioglossum vulgatum. 



This list, which we may presume to be tolerably perfect, offers a 

 few points for observation. Contrasting it with our own, it contains 

 three species with which we are unacquainted, Equisetum ramosum, 

 Lycopodium Chamaecyparissus and Struthiopteris germanica ; the 

 first of these may possibly prove identical with our Equisetum varie- 

 gatum, the others are undoubtedly distinct. On the other hand, we 

 have no less than sixteen species that are absent from M. Wirtgen's 

 list, these are — 



Equisetum variegatum Lastraea recurva 



Adiantum Capillus- Veneris Asplenium lanceolatum 



Allsorus crispus Asplenium marinum 



Woodsia Ilvensis viride 



alpina Trichomanes speciosum 



Lastraea rigida Hymenophyllum tunbridgense 



