ACROCARPOUS MOSSES. 483 
12. B. revoluta (Schrad.) Brid. 
Range 1-2. 
Limestone walls, and the mortar joints of brick walls in 
calcareous districts, not very common. 
On mud-capped walls at Welburn, Castle Howard 
(Spruce). 
On limestone walls near Richmond, and near Limekiln 
Wood, Catterick on the Swale, also at Aysgarth Force 
and Hawes in Wensleydale (Barnes). 
Walls in Upper Teesdale. 
Fruiting- 4 mth. 
13. B. convoluta Hedw. 
Rang-e 1-2. 
On bare places amongst short grass, and on heathery 
grounds. 
Frequent both in the low country and amongst the hills. 
Fruiting 4-5 mths. 
14. B. unguiculata (Huds.) Hedw. 
Range 1-2. 
Upon hedge banks, bare ground, and shaded rocks and 
walls, in the low country and amongst the hills, frequent. 
Var. p cuspidata (Schultz). 
On gravelly banks, not uncommon. 
Fruiting 12-2 mths. 
15. B. mucronata (Brid.). Lindb. 
(Barb. Brehissoni^ Brid.). 
Range i. 
At roots of old trees by river sides, rare- 
Near Egglestone Bridge, Teesdale (Spruce 1843). 
Fruiting 5 mth. 
June, 1905. 
