64 HISTORY OF BRITISH FERNS. 



3. C. montana, Link. — Fronds triangular, tripinnate. Plate 

 XIV. ficr. 2. 



POLYPODIACE.E § PeRAXEME.E, 



Genus 14. WOODSIA, R. Broicn. 



1. W. ilvensis, R. Broicn. — FronJs lanceolate, hairy- 



squamous; pinnre oblong, lobed. Plate III. fig. 2. 



2. W. alpina, Gnuj. — Fronds linear, almost smooth ; pin- 



na^ bluntly triangular, lobcd. Plate IV. fig. 1. 



PoLYPODIACEvE § HYMENOPIIYLLEiE. 



Genus 15. TRICHOMANES, Linnccus. 

 1. T. radicans, Sicartz. — The only British species. Plate 



XVIII. fig. 1. 



Genus 16. HYMENOPHYLLUM, Smif/i. 



1. H. tunbridgense, Smith. — Pinnse vertical, involucres 



compressed, serrate. Plate XV. fig. 2, 



2. H. Tinilaterale, Willdenow. — Pinna) dcflexed, involucres 



inflated, entire. Plate XV. fig. 3. 



OsJIUNDACEiE. 



Genus 17. OSMUNDA, Linnccus. 



1. 0. reg-alis, Linnaus. — The only British species. Plate 



XIX. fig. 2. 



