INTRODUCTION. 



XIX 



The following is a conspectus of the system of classification 

 followed in this work, so far as relates to the main sub-divisions 

 and the Natural Orders. 



Sub-Class I. SPHAGNALES p. i 



Order I. Sphagnaceae ,, 



Sub-Class II. ANDRFJEALES p. 23 



Order II. Andreaeaceae „ 



Sub-Class III. BRYALES p. 30 



Group A. NematodontE/E „ 



Order III. Tetraphidaceae „ 



Order IV. Polytrichaceae p. 32 



Order V. Buxbaumiaceae p. 47 



Group B. Arthrodonte^e p. 51 



Sub-Group I. Aplolepideae „ 



Order VI. Dicranaceae ,, 



Order VII. Fissidentaceae p. 118 



Order VIII. Grimmiaceae p. 128 



Order IX. lortulaceae p. 162 



Order X. Encalyptaceae p. 226 



Sub-Group II. Diplolepideae p. 232 



* Diplolepideae Acrocarpae „ 



Order XI. Orthotrichaceae ,, 



Order XII. Schistostegaceae p. 259 



Order XIII. Splachnaceae p. 260 



Order XIV. Funariaceae p. 266 



Order XV. Meesiaceae p. 277 



Order XVI. Timmiaceae p. 283 



Order XVII. Bartramiaceae p. 284 



Order XVIII. Bryaceae p. 298 



* * Diplolepideae Pleurocarpx p. 352 



Order XIX. Fontinalaceae „ 



Order XX. Cryphaeaceae p. 357 



Order XXI. Neckeraceae p. 359 



Order XXII. Hookeriaceae p. 363 



Order XXIII. Leucodontaceae p. 365 



Order XXIV. Leskeaceae p. 372 



Order XXV. Hypnaceae p. 386 



