532 baker's north YORKSHIRE. 
2. A. fallax (Brid.) Milde. 
[Hypniim filicinum f3. iHxllis-clansae (Wils. B.B.). 
Range 1-2. 
In streams and near springs, not common. 
Crambeck, Castle Howard (Spruce, 1844). 
Plentiful in the streams in Yowlasdale and Flazendale 
(Baker). 
In pools below Cronkley, Teesdale (Barnes, 1880). 
Near Helmsley (Ingham). 
Fruiting 4-5 mths. 
3. A. jppiguum (Wils.) Schpr 
Range i. 
Sandstone rock and stones in streams. 
On stones by the Derwent, near the weir at Kirkham 
(Spruce, 1847). 
Stones by the Swale at Aisenby, and by the ^'ore at 
Tanfield (Baker). 
On stones in Easington Beck and Roxby Beck in Cleve- 
land (Barnes). 
At Cotherstone, Teesdale (Barnes 1897). 
Fruiting 5 mth. 
4. A. fluviatile (Swartz) Schpr. 
Range r-2. 
Rocks and stones in sub-alpine streams. 
Lowdy Hill Gill, Castle Howard (Spruce, 1848). 
In the Tees at Croft and Dalton, the Swale at Topcliff, 
and the Yore at Aysgarth Force and Tanfield (Baker). 
Whitstonedale Beck, Swaledale, and in the Tees at 
Winston (Barnes). 
Fruiting 5-6 mths. 
