THE MOSSES OF THE UPPER DOVEY. 331 



The list does not pretend to be exhaustive, but, as the district 

 does not appear to have been previously worked, it seemed not 

 undesirable to publish an enumeration of those Mosses which have 

 hitherto been found. The list contains 208 species and 22 varieties, 

 collected from an area of about 16,000 acres. I am indebted to the 

 Kev. H. G. Jameson and Mr. Holt for having kindly verified the 

 naming of the species and varieties in the collection. The nomen- 

 clature followed is that of the London Catalof/ue of Mosses. 



Sphaijnum acuUfoUum Ehrh. — Var. rnbelliim Wils. — S. strictiun 

 Lind. — S. squarrosHiu Pers. — S. intermedium Hoffm. — S. cuspidatam 

 Ehrh. — S. molle SuU. — S. subsecundum.'^ees,. — Var. contortum. Schultz. 

 — Var. obesum. Wils. — *S'. papillosum Lindb.— Var. confertum Liudb. 

 — <S'. ci/mbifoliwn Ehrh. 



Andreaa petrophila Ehrh. — A. alpina Turn. Abundant on the 

 summit of Aran Mawddwy. — A. Rothii W. & M. — Var. falcata Liudb. 

 — A. crassinervis Bruch. Frequent on alpine rocks. 



Gymnostomum, rupestre Schwg. — G. curvirostrum Ehrh. — G. 

 microstomum Hedw. — G. tortile Schwg. 



Weissia viridida Brid. — W. crispula Hedw. — W. cirrhata Hedw. 



Rhabdoweissia fugax Hedw. — R. denticulata Brid. 



Oncophorus crenulatus Braithw. 



Cynodontium Bruntoni Sm. 



Dichodontium pellucidum L. About the beds of streams, fre- 

 quently in fruit. — Var. strictum Braithw. — D. Jiaresceiis Lindb. 



Dicranella squarrosa Schrad. Abundant. — D. cerviculata Hedw. 

 — D. varia. On clay banks, frequent. — D. rufescens Turn. — D. 

 subulata Hedw. — D. heteromalla Hedw. Abundant throughout the 

 district. — Var. sericea Schpr. 



Dicranum Scottianum Tarn. — D. scoparium Hedw. A small form 

 frequently found on trees. — D. majus Turn. — D. palustre Bry. Brit. 

 Moorland bogs, frequent. 



Dicranodontium lonyirostre Br. k Sch. 



Campylopus atrovirens De Not. On wet rocks, common. — Var. 

 epilosus Braithw. — 0. brevijnlus Br. & Sch. — C. fiexuosus Brid. On 

 turfy ground, common. — Var. paradoxus Braithw. — C. fratjilis 

 Br. & Sch. Moorlands, frequent. — C. pyrifonnis Brid. 



Leucobryum glaucum L. 



Pleuridium nitidum Hedw. — P. suhulatum L. Very common. 



Seligeria recurvata Hedw. Frequent on the Bala limestone. 



Blindia acuta Br. & Sch. 



Pottia truncata L. Common on fallow ground. 



Didymodon rubellus Br. & Sch. Frequent. — D. cylindricus Br. & 

 Sch. Wet rocks and by waterfalls. — Var. Holtii Braithw. Fre- 

 quent on dripping rocks. 



Ditrichum homomallum Hedw. Banks and stony ground, frequent. 



Trichostomum tophaceum Brid. 



Barbula muralis L. Common on walls. — B. unguiculata Dill. 

 Frequent on banks. — B.fallax Hedw. — B. rigidula Dicks. — B. 

 cylindrica Tayl. — B. revoluta Schwg. — B, convoluta Hedw. Frequent 

 on walls. — B. tortuosa L. Abundant on rocks and banks. — Var. 



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