ACROCARPOUS MOSSES. 469 
In the central vale on sandy ground at Leckby, and on the 
slope of the Hanibleton Hills, on rocks below Whitstoncliff, 
also at Rolston Scar, and near Oldstead (Baker). 
On sandstone walls near Ebberston (M.B.S ). 
In Cleveland near Upleatham, also on the north wall of 
Thirsk Church, and at Kilvington Mill (Barnes). 
Fruiting 5-6 mths. 
7. T. mural is (L.) Hedw. 
B. Range 1-2. 
Everywhere common on walls and rocks, and sometimes 
on trees amongst other mosses. 
Fruiting 4-5 mths. 
Var P rupestris (Schultz.). 
Not uncommon. Wet shaded rocks and walls amongst 
the hills and near the coast. 
At Scalby, near Scarbro', also in the Eskdale district near 
Egton, Goathland and Whitby (M.B.S.). 
Var. 7 aestiva (Brid.). 
Near Rokeby (R. Barnes). 
(ToPtula cernua (Hueb.). Lindb. 
[^Desmatodon cernuus^ B. et S.). 
This is one of the latest additions to the British Moss 
Flora. It was met with in the West Riding of Yorkshire, 
in small quantity only, on the Magnesium limestone near 
Aberford, last autumn, by Mr. George Webster of York 
(Sep. 1900). 
A good account of its discovery is given in the January 
number of the Naturalist for 190 1, to which readers may 
refer, and now attention having been drawn to it, possibly 
it may be found in other districts.) 
Fruiting 8-10 mths. 
Jnne, 1905. 
