72 HOW TO KNOW THE MOSSES 



6i. Hygroamblystegium 211 



62. Drepanocladus 213 



63. Calliergon ^ 216 



64. Acrocladium 217 



65. Hygroh>^num 218 



66. Ctenidium 221 



67. Rhytidiadelphus 223 



68. Hylocomium 225 



69. Hypnum 22g 



70. Ptilium 230 



71. Stereodon 231 



72. Isopterygium 238 



73. Plagiothecium 240 



74. Camptothecium 243 



75. Brachythecium 244 



76. Cirriphyllum 250 



77. Oxyrhynchium 251 



78. Eurhynchium 252 



79. Bryhnia 254 



80. Rhynchostegium 256 



