156 
W. Mudd. Gillaleys, Castle Howard — M. B. Slater. Went Vale, 
near Pontefract — J. W. Watson. Helks wood, near Ingleton. 
15. W. acuta, Hedw. Fr. May, June. 
Blindia, B. and S. Plentiful on basaltic rocks by tbe Tees, at Wince 
bridge, and other places in Teesdale — R. Spruce , M. B. Slater. 
Bolton, Wharfdale — S. Gibson. Rocks at Ingleby, Cleveland — W. 
Mudd. 
XIY. GRIMMIA. 
1. G. apocarpa, Hedw. Fr. Spring. 
Schistidium, B. and S. Walls and rocks ; frequent. The fiuitant 
form (G. rivularis, Brid.) is not uncommon in mountainous rivulets. 
Var. stricta, Turn., occurs on rocks near the Strid, Wharfdale. 
2. G. saxicola, Schwaegr. Fr. May. 
Campylostelium, B. and S. Merrick’s gill, Hackness — R. Spruce. 
3. G. maritima, Turn. Fr. March. 
Schistidium, B. and S. On the coast cliffs at Huntcliffe point, near 
Saltburn — W. Mudd. 
4. G. pulvinata, Smith. Fr. Spring. 
5. G. trichophylla, Grev. Fr. March. 
Walls between Barnard Castle and Middleton, Teesdale; abundant 
— R. Spruce. Walls on the top of the Hambleton hills, above Boltby 
— J. G. Baker. Old walls near Barden tower, and rocks in Bolton 
woods. Frequent on walls near Pateley bridge, in Nidderdale. 
6. G. spiralis, H. and T. Fr. Autumn. 
High force, Teesdale, on basaltic rocks — R. Spruce. Rocks at the 
White force, Cronkley fell — J. G. Baker. 
7. G. torta, Horns, and JSfees. 
Cronkley scarrs, Teesdale — R. Spruce. 
8. G. ovata, Web. and Mohr. Fr. June. 
Rocks above the Rye, near Laskill bridge, Bilsdale — J. G. Baker. 
9. G. Doniana, Smith. Fr. Summer. 
Old walls near the White force, and other parts of Cronkley fell — 
A. O. Black, J. N. 
XY. DIDYMODON. 
1. D. purpureus, H. and T. Fr. Spring and Summer. 
Ceratodon, Brid. 
2. D. flexieolius, H. and T. Fr. Winter. 
Ackworth, near Pontefract— J. Brown. Ayton moor, Cleveland — 
W. Mudcl. Eaves wood, near Pleptonstall. 
