LIST OF ILLUSTRATIONS. vii 



FIG. PAGE 



24. Dicranum scoparium, plant, calyptra, leaf, leaf cells . . 42 



25. Funaria hygrometrica, plant, calyptra, leaf, and leaf cells . 47 



26. Pottia cavifolia, plant, capsule, leaf, leaf nerve . . -49 



27. Bartramiafontana, plant, calyptra, capsule . . . -S3 



28. Mnium subglobosum, plant, capsule, leaf, leaf cells, synoicous 



flowers : ... 54 



29. Sphagnum cymbifolium, capsule . . . . . -55 



30. Sphagnum acutifolium, fruit, leaf, apex of leaf, leaf cell . . 56 



31. Pogonatum alpinum . . . . . . -59 



32. Barbula subulata, plant, peristome, leaf, and leaf cells . . 62 



33. Racomitrium canescens, fruit, peristome, operculum, calyptra, 



leaf . 63 



34. Ortkotrichum stramineum, plant, capsule, calyptra, operculum, 



leaf, leaf cells ........ 64 



35. Mnium punctalum. . 65 



36. Fontinalis antipyretica, plant and fruiting branch . . . 66 



37. Anomodon viticulosum . . 8l 



38. Atrichum undulatnm ........ 82 



39. Pogonatum urnigerum ... . . . . . .83 



