THE MOSSES OF NORTHUMBERLAND 311 



QRIMMIACE>E. 



Grimmia apocarpa, Hedw. Cheviot. 



G. APOCARPA var. rivularis, W. and M. Hen Hole, Cheviot. 



G. APOCARPA var. gracilis, W. and M. Hen Hole and Bizzle 



(M.Fl.) 

 G. MARiTiMA, Turn. Coast of North Durham (M.Fl.) ; Dun- 



stanburgh. 

 G. TORQUATA, Homsch. Hen Hole and Bizzle, Cheviot (M.Fl.) 



I gathered it in the former locality. 

 G. PULViNATA, Smith. Dunstanburgh. 



G. iNCURVA, Schwaeg. Bellyside Hill and Cheviot (M.Fl.) 

 G. ovATA, Schwaeg. Kyloe Hills (W.B.B. coll.) 

 G. TRiCHOPHYLLA, Grev. Alnwick Moor, etc. (M.Fl.) In fruit, 



sparingly, on walls near Wooler. Kyloe Crags, a blackish, 



densely tufted form, with abundant gemmae among the 



upper leaves at times, and with the basal areolation 



frequently very shortly and widely rectangular, almost 



as in G. subsqucvrrosa, Wils. 

 G. Hartmani, Sehp. Hen Hole, Cheviot. On boulders in 



stream. 

 G. PATENS, B. and S. Cheviot, etc. (M.Fl.) Fruiting rather 



well in the Hen Hole in 1905. 

 G. DoNiANA, Smith. Cheviot, and Whiteside Hill, Wooler 



(M.Fl.) 

 Rhacomitrium ACicuLARE, Brid. "N. Cheviot " (Thompson.) 

 R. PROTENSUM, Braun. Hen Hole, Cheviot. 

 R. FASCicuLARE, Brid. "N. Cheviot [B.G.]" (Thompson.) 

 R. HETEROSTiCHUM, Brid. '*N. Cheviot [B.O.] (Thompson.) 

 R. HETEROSTICHUM var. GRACiLESCENS, B. and S. Hen Hole, 



Cheviot ; with short, pale capsules, difficult to distinguish 



from B. sudeticum, B. and S., but with the short ramulose 



branching of R. heterostichum. 

 R. HETEROSTICHUM var. ALOPECURUM, Hiibn. Cheviot. 



[R. SUDETICUM, B. and S. ' N. On dry exposed mountain rocks. 

 "On Cheviot" (Thompson.) "On Cheviot, Hedgehope, and Alnwick 

 Moor" (Winch.) Over nearly all the high Cheviot rocks, but fruiting 

 best in the Bizzle and Hen Hole; House of Crag' (M.Fl.) I have seen 

 no specimen so named, and I have very grave doubts as to whether 

 the plant here referred to is not B. heterostichum var. gracilescens. 

 The two plants closely resemble one another, indeed it is very difficult 



