182 BARNES: MOSS-FLORA OF NIDDERDALE AND WENSLEYDALE, 
jasae Wr pusilla Hedw. How Stean Beck (N.); Whiteld 
ll (W.). 
ee acutifolia var. longiseta Lindb. How Stean Beck (N., 
Seligeria tristicha Brid. Very plentiful ee - v two places on 
dripping limestone rocks, How Stean N.); Aysgarth 
Force (W.); Whitfield Gill (W.); in oon places on the 
north side of Addelburgh (W.); and at the High Force 
Park Scar Waterfalls in Semerdale (W.). 
Campylostelium saxicola W. & M. Wiley Cat Wood, Slape 
Wath (C.). Fairly well distributed throughout this part of 
North-East Yorkshire, 
Blindia acuta Hedw. Blayshaw Beck (N.); How Stean 
(N.); and Ravensgill (N.). : 
POTTIACEZ:, 
Pottia intermedia Turn. On garden ground, Thirsk. 
Didymodon luridus Hornsch. Deepdale (T.); Rokeby (T) 
near Thirsk; and at Kilvington Mill, Thirsk ; Hawnby 
with fruit ; Saltburn (C.), with fruit; Greenhow Hill (N.). 
Didymodon flexifolius Dicks. Middlesmoor (N.), i seven! 
places ; and at Greenhow Hill ( 
Didymodon cylindricus Bruch. Whitfield Force (W.); Hams 
(R.), with perfect fruit. 
Didymodon sinuosus Wils. Blayshaw Beck (N.)5 Goydon } te 
Hole (N.); Rokeby (T.) ; Thirsk. 
Ditrichum homomallum Hedw. Blayshaw Beck (N. ); Raver 
gill (N.). 
Trichostomum mutabile Bruch. Addelburgh es ; 
occurs on the sea banks near Saltburn, the leaves 
certainly more linear than in typical Z- Mpg yt et 
apex of the leaf, so characteristic of Z. 7% m, 18 
wanting, and, therefore, I think it can ne “thee 
to the above species. sch 
Trichostomum mutabile Bruch. var. oh 
Addelburgh (W.). 
Trichostomum crispulum Bruch. Addel 
Trichostomum nitidum Lindb. Askrigg (W-)5 ™ 
~ Force, Semerdale (W.) ; Deepdale (T-). 
Barbula rigida Schultz. Pierce Bridge (D-)- c); and 2 
Barbula ambigua B. & S. On walls at Skelfon 77 
clayey ground, Saltburn (C.). 
burgh (W.). 
wall neat 
