THE MOSSES OF THE UPPEK 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 Rev. 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 Catalogue of Mosses. Sphagnum acutifolium Ehrh. — Var. ruhellum Wils. — S. strictum Lind. — S. squarrosum Pers. — S. intermedium Hoffm. — S. cuspklatum Ehrh. — 8, molle Sull. — 8. subsecundum^ees. — Var. contorium Schultz. — Var. obesiim Wils. — 8. papillosum Lindb. — Var. con/ertum Lindb. — 8. cymbifolium Ehrh. Andrecea petropJiila Ehrh. — A. alpina Turn. Abundant on the summit of Aran Mawddwy. — A. Rothii W. & M. — Var. falcata Lindb. — A. crassinervis Bruch. Frequent on alpine rocks. Gymnostomum rupestre Schwg. — G. curvirostrum Ehrh. — G. microstomum Hedw. — G. tortile Schwg. Weissia viridula Brid. — W. crispula Hedw. — W. cirrhata Hedw. Rhabdoweissia fugax Hedw. — R. denticulata Brid. Oncopliorus crenulatus Braithw. Cynodo7itium Bruntoni Sm. Dichodontium pellucidum L. About the beds of streams, fre- quently in fruit. — Var. strictum Braithw. — D. fiavescens Lindb. Dicranella squarrosa Sclirad. Abundant. — D. cervlculata 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. Dicra7iodontium longirostre Br. & Sch. Oampylopus atrovirens De Not. On wet rocks, common. — Var. epilosus Braithw. — C. brevipilus Br. & Sch. — C. fiexuosus Brid. On turfy ground, common. — Var. paradoxus Braithw. — C. fragilis Br. & Sch. Moorlands, frequent. — C. pyriformis Brid. Leucobryum glaucum L. Pleuridium nitidum Hedw. — P. subulatum 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. TrlcJiostomum tophaceum Brid. Barbula muralis L. Common on walls. — B. unguiculata Dill. Frequent on banks. — B.fallax Hedw. — B. rigidida Dicks. — B. cylindrica Tayl. — B. revoluta Schwg. — B. convoluta Hedw. Frequent on walls. — B. tortuosa L. Abundant on rocks and banks. — Var. z 2
