60 THE DISTRIBUTION OF BRITISH MOSSES. 



rare and dying out. Cuscuta Epithyinuin, very rare. Lhnosella ; 

 Utricularia viinor, extinct, I fear. Verbena, thinly but widely 

 spread. SniteUaria minor, growing rarer. Teucrimn Scord'nun, 

 extinct in N., if not in S. Hex, Frcuinus, Ulinus, Qnercns, Fcu/ns, 

 Salix, Pimis, and Tajtis have all been found under the peat. The 

 Hex was sub-fossihzed. Stratiotes is still widely distributed. 

 S/iiranthes autuinnalis must be river-borne in seed, or its distribution 

 is inexplicable, his fcctidusinia is very rare. FAeocharis acicidaris 

 is the same. 



Notes on aliens N. and S. would form a long paper by them- 

 selves. We are gaining faster than loosing, strong-growing new 

 species taking the place of old ones. Clematis is an interesting one. 

 Asparagus altilis has been with us three hundred years. The aliens 

 confined to N. I can n ime here are Cyclamen, Teucrium Chamadrys, 

 Mercurialis annua. Acorns, and Phegopteris Dryopteris, if it is one. 

 Interesting S. aliens are Lim,nanthemum, Salvia pratensis, Viscum, 

 and Cyperus longus. 



The County Herbarium is within a few species of being quite 

 perfect: it contains many extinct and very rare plants, and anoma- 

 lies and colour forms of all kinds, besides a widely selected series 

 of type forms from N. and S. 



THE DISTBIBUTION OF BRITISH MOSSES. 



By E. Charles Horrell. 



For some time past it has seemed desirable that the comital 

 distribution of the British Mosses should be worked out in the way 

 that the distribution of the Flowering Plants was done by Watson. 

 Up to the present the moss distribution has only been worked out, 

 and that but incompletely, in the London Catalogue of British Mosses, 

 ed. 2, for the eighteen Watsonian provinces. With the object of 

 seeing how far the lists of Mosses already published would enable 

 me to compile a census of the 112 Watsonian vice-counties, I have 

 looked through most of the magazines, County Floras, Proceedings 

 of Local Natural History Societies, the Botanical Ptecord Club's 

 Reports, &c., in the library of the British Museum, and find that 

 fairly good lists have been published for about fifty vice-counties. 

 There are therefore about sixty-two vice-counties in Great Britain 

 for which I can find no lists of the commoner mosses. From the 

 following vice-counties I have found no satisfactory lists : — 



4. N. Devon. 27. E. Norfolk. 43. Radnor. 



5. S. Somerset. 28. W. Norfolk. 44. Caermarthen. 



6. N. Somerset. 29. Cambridge. 45. Pembroke. 



7. N. Wilts. 31. Hunts. 46. Cardigan. 

 10. I.ofAVight. 33. E.Gloucester. 47. Montgomery. 

 13. W. Sussex. 34. W. Gloucester. 50. Denbigh. 

 22. Berks. 41. Glamorgan. 51. Flint. 



24. Bucks. 42. Brecon. 56. Notts. 



