534 baker's north Yorkshire. 
Near Kirkham Abbey (M.B.S.). 
On the east coast near Cayton Bay (J. A. Wheldon). 
Coatham Marshes (R. Barnes, 1892). 
Fruiting- 4-5 mths. 
9. A. confervoides (Brid.) Br. Sch. 
Montane B. Range 1-2. 
On stones in calcareous districts, rare. 
Near Hawnby in Bilsdale, amongst the eastern hills 
(Slater and Stabler, 1871). 
On stones near Rivaulx Abbey (M.B.S.). 
Amongst the western hills near Aysgarth Force, and 
Askrigg Wensleydale, also near Richmond and Kisdon 
Force. Svvaledale (R. Barnes, 1889). 
Fruiting 8 mth. 
10. A. Sprucei (Bruch) Br. Sch. 
{Leskea Sprucei Bruch.). 
Montane B. Range 1-2. 
Shady calcareous rocks, rare. 
First discovered on stones near Winch Bridge, Teesdale, 
by the side of the stream, by R. Spruce, 1843. 
Near Egglestone Abbey by the Tees (Baker). 
In the Tees district, by the Westmorland side of Maize 
Beck, Langdon Beck, Ovington and Gainford. Also in 
Swaledale, at Kisdon Force, Gunnerslde, and near Richmond 
(Barnes). 
Amongst the eastern hills, on stones by Goathland Beck 
(M.B.S., 1855). 
Fruiting 6 mth., very rare. 
II. A. ripapium (L.) Br. Sch. 
(Hypinwi riparuun L. ). 
Range i. 
On stones and wood by streams and ditches, common 
