312 THE MOSSES OF NORTHUMBERLAND 



to point out any clear and constant character ; but R. sudeticum is a 

 distinctly Alpine plant, reaching much higher than the vars. of R. 

 heterostichum, and it would appear to be a somewhat rare plant with 

 us, while R. heterostichum var. gracilescens is one of the most abundant 

 forms of the genus on rocks throughout most of the mountainous 

 districts of England and Wales. The plant that I gathered in Hen 

 Hole might easily pass for R. sudeticum, which, however, according 

 to Braithwaite "has in no form the peculiar ramification" (of Rhaco- 

 mitrium), and is therefore excluded on the score of the branching 

 alone. I think it is better, pending further evidence, to exclude 

 R. sudeticum from the Northumberland Flora.] 



E. LANUGiNosuM, Brid. "N. Cheviot [B.Q-.]" (Thompson.) 



E. CANESCENS, Bi'id. Langleyford, etc. (M.Fl.) 



E. CANESCENS var. ERicoiDEs, B. and S. " N. Cheviot [B.G.]" 



(Thompson.) I did not happen to see this variety. 

 Ptychomitrium polyphyllum, Furnr. Near the Maiden Well, 



Wooler (M.Fl.) 

 Eedwigia ciliata, Ehrh. Cheviot (M.Fl.) 



TORTULACE/E. 



PoTTiA LANCEOLATA, CM. Near Alnwick and Lyham (M.Fl.) 



ToRTULA RiGiDA, Schrad. Belford (M.Fl.) 



T. ALOiDES, Da Not. Spittal, etc. (M.Fl.) 



T. MURALis, Hedw. Dunstanburgh. 



T. suBULATA, Hedw. Langlee Crag Ravine (M.Fl.) 



T. L^viPiLA, Schwaeg. Wooler Water (M.Fl.) 



T. INTERMEDIA, Berk. Dunstanburgh. 



T. RURALiFORMis, Dixon. In sand on links, Bamburgh. "T. 

 RURALis" is recorded by Thompson from Scremerston and 

 Goswick Links, but there is every probability that the 

 present sub-species is intended. The typical T. riiralis 

 is no doubt frequent, but no locality for the vice-county 

 is given in the M.Fl. 



Barbula rubella, Mitt. " N. On Cheviot [B.G.]" (Thomp- 

 son.) 



B. TOPHACEA, Mitt. Roddam Dean, etc. (M.Fl.) 



[Teichostomum RiGiDULUM, Smith. " On moist rocks, and by the 

 gravelly edges of nearly all our streams ; ascending among the hills 

 to Langlee Crags, Common burn, Heathpool, and the Bizzle Burn" 

 (M.Fl.) This almost certainly refers to the segregate B. spadicea 

 rather than tQ B, rigidula, Mitt.] 



