5i6 baker's north Yorkshire. 
16. B. argenteum L. 
Range 1-3. 
On waste ground, walls and rocks, frequent. 
Near York, Kirkham Hill, Ganthorpe, Castle Howard, &c. 
(Spruce 1841). 
Common upon old thatched roofs, and walls ascendhig- 
from the Central Vale to the limestone pavement of Cam- 
fell (Baker). 
Fruiting- lo-ii mths. 
Var. 7 lanatum (P. Beauv. ). 
Near Holwick, Upper Teesdale (Barnes). 
17. B. bicolor Dicks. 
{Bry. atro-ptirpureiim W. et M.). 
Range 1-2. 
On banks, roadsides, and walls, not rare. 
Near York, Kirkham Hill, and Castle Howard (Spruce 
1844). 
Frequent upon walls and banks from the Central \'ale, 
to the plateau of Holwick Fell, often associated with B^ 
argenteum (Baker) 
Var. /J gracilentum Tay. M.S.S. 
Near Ganthorpe, Castle Howard (Spruce.). 
Fruiting 5 mth. 
18. B. erythrocarpon Schwaegr. 
( B. S(i jiiTii incn ;;/. B r i d . ) . 
Range i. 
Gravell}' and sandy heaths. 
In the Central Valley on Stockton Forest near York, 
and in Cumm Hagg wood, Castle Howard (Spruce 1843). 
