294 A NEW FLOKA OF 



2. WOODSIA, E. Br. 



1. W. ihensis, R. Br. Native. Highland type. Area D. 

 Range 1. 



In Teesdale on Falcon Glints, 450-500 yards, now nearly or 

 quite extinct. 



3. POLYPODIUM, L. 



1. P. vulgare, L. Native. British type. Area C, IS", D. 



Range 1, 2. 



Rocks, walls, and old trees, common, ascending to 500 yards. 



2. P. phegopteris, L. Native. Scottish type. Area C, N, D. 



Range 1-3. 



Prequent in the hill denes, ascending to 500 yards in Teesdale 

 and the Derwent district, to 700 yards on Cheviot in the Duns- 

 dale ravine, descending nearly to sea-level in Castle Eden Dene. 



3. P. df^yopteris, L. Native. Scottish type. Area C, N, D, 



Range 1, 2. 



Often associated with the preceding, and even more frequent, 

 ascending to 500 yards in the Cheviot ravines, 1430 feet near the 

 head of the Knucton Bum, 1400 feet near Allenheads, descending 

 to Castle Eden Dene, Hartlepool Bridge on the Blyth, Walbottle 

 and Scotswood Denes on the Tyne. 



4. P. calcareum, Sm. Native. English type. Xerophilous. 



Area D. Range 2. 



Limestone cliffs on the banks of the stream that runs into the 

 Tees at Middleton (T. Wilcke !). Altitude about 400 yards. 



4. ALLOSORUS, Bernh. 



1. A. crispus, Bernh. Native. Highland type. Area C, N, 

 D. Range 1-3. 



Plentiful in many places on the porphyritic crags of the Che- 

 viot tract, ascending to the head of the ravines, 700 yards, de- 

 scending to the junction of Caldgate and Common Burns, 200 



