Class IV.— VASCULAR CRYPTOGAMS 



In Switzerland alone there are about 45 true ferns (excluding 

 Botrychium, Ophioglossum, etc.), or just about the number to be 

 found in the British Isles. 



List of the Ferns and Fern Allies of Switzerland, 

 based on the arrangement of Schinz and Keller : 



POLYPODIACE^ 



Aihyrium Filix foemina Roth. (Woods from the plain to 

 the Alpine region.) 



alpestre Rylands. (Alps, sub-Alps, and Jura.) 



Cysiopleris fragilis Bemhardi. (Alps and sub-Alps.) 



Sub-sp. regia Bernoulli. (Alps and sub-Alps.) 



• montana Desv. (Limestone Alps, sub- Alps, and Jura.) 



Dryopieris Phegopteris C. Christensen. (Woods, etc.) 



■ LinncBana C. Christen. (Woods, etc.) 



Robertiana C. Christen. (Limestone rocks, etc.) 



■ montana O. Kuntze. (Woods and pastures.) 



Thelypteris A. Gray. (Peat bogs.) 



Filix mas Schott. (Woods.) 



— ■ — rigida Underwood. (Limestone screes.) 



cristata A. Gray. (Peat bogs ; rare.) 



spinulosa 0. Kuntze. (Woods and bogs.) 



Sub-sp. dilatata C. Christen. (Woods and bogs.) 



Lonchiiis O. Kuntze. (Rocky slopes in Alps and 



sub- Alps.) 

 aculeata O. Kuntze. (Mountain woods.) 



Sub-sp. lohatum Schinz et Thellung. (Mountain woods.) 



Sub-sp. ■ angulare Schinz et Thellung. (Chestnut region.) 



Braunii Underwood. (Very local.) 



Onoclea Struthiopteris Hoffm. (Rare ; Tessin, etc.) 

 Woodsia ilvensis Bab. (Rocks in Alps and sub-Alps.) 



Sub-sp. rufidula Aschers. (Grisons, Tessin.) 



Sub-sp. alpina Gray. (Very local.) 



Blechnum Spicant With. (Pine forests and pastures.) 

 Phyllitis Scolopendrium Newman. (Shady places.) 

 Asplenium Ceterach L. (Rocks, walls, etc.) 

 Jontanum Bemh. (Sub-alpine rocks ; local.) 



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