A SYNOPSIS OF THE BRITISH MOSSES, CONTAINING DESCRIPTIONS OF ALL THE GENERA AND SPECIES, (WITH LOCALITIES OF THE RARER ONES) FOUND IN GREAT BRITAIN AND IRELAND, BASED UPON WILSON’S “BRYOLOGIA BRITANNICA,” SCHIMPER’S “SYNOPSIS,” ETC. BY CHAS. P. HOBKIRK, _President of the Huddersfield Naturalists’ Society_. LONDON: L. REEVE & CO., 5, HENRIETTA STREET, COVENT GARDEN. MDCCCLXXIII. PREFACE. It is not my desire that this little volume should be looked upon as anything more than what is expressed in the title, simply “A SYNOPSIS OF THE BRITISH MOSSES,” and as a kind of _vade-mecum_ to the working Bryologist, as well as a guide to beginners. It is not altogether an original work, nor yet is it a mere compilation, for nearly every species has been carefully examined under the microscope before being described, and then the diagnoses compared with other works, principally that great text-book of British Bryologists, “Wilson’s Bryologia Britannica.” Besides this work, I have also largely consulted, and drawn from, Bruch and Schimper’s “Bryologia Europæa,” Schimper’s “Synopsis,” Dr. Mueller’s “Synopsis,” the Proceedings of the Linnean Society, the _Bulletins_ of the Royal Botanical Societies of France and of Belgium; and last, but not least, the valuable papers recently contributed by Dr. Braithwaite to “Journal of Botany,” “Grevillea,” and the “Monthly Microscopical Journal,” and also some papers by Mr. Mitten in the first-named publication. In the general arrangement of the genera and species, I have mainly followed the “Bryologia Britannica,” as I did not consider myself justified in departing widely from it, although many of our principal Muscologists look upon it as very faulty; but I did not hold my authority sufficient to alter what has become a classical arrangement amongst us: and more particularly as both Dr. Braithwaite and the Rev. J. Fergusson are engaged upon more critical examinations, prior to the publication of new and more natural arrangements. The Analysis of the Genera is principally founded upon the same part from Wilson, and is intended not as an arrangement, but merely a key. In the “Appendix” will be found a few omitted species, and alterations of nomenclature, as well as a few _errata_, which should be noted in the margin at their proper places.