_Mitriform_ (of calyp.) mitre-shaped, not split up the side. _Monoicous._ barren and fertile fl. on same plant, but not on same receptacle. _Mucro._ a short terminal point. _Mucronate._ terminated with a mucro. _Muriculate._ roughened with sharpish prominences. _Muticous._ without a point. _Ochrea._ the filmy sheath surrounding base of seta. _Pagina._ the blade of the leaf apart from the nerve. _Panduriform._ fiddle-shaped. _Papillose._ roughened with blunt roundish prominences. _Percurrent._ extending the entire length. _Perichætium._ the leafy involucre at base of seta, surrounding the vaginula in fertile fl. _Perigonium._ the leaves surrounding the barren fl. _Peristome._ the teeth at mouth of caps. covered by the lid before it falls. _Plicate._ furrowed. _Præmorse._ ending suddenly, as if bitten off. _Pyriform._ pear-shaped. _Quadrate._ square. _Radicles._ small rooting fibres. _Radiculose._ covered with radicles. _Rhizome._ a creeping subterranean stem. _Rhomboid (rhombus)._ an oblique square. _Rostellate._ with a very short beak. _Rostrate._ with a longer beak. _Rugose._ wrinkled or crumpled. _Scariose._ dry and chaffy (opposed to tender and succulent). _Secund._ all turned to one side. _Seta._ the fruit-stalk. _Setaceous._ bristle-shaped. _Spathulate._ somewhat resembling a battle-door. _Strumose._ swollen at base. _Sub-._ in a slight degree; _e. g._ “sub-serrate” slightly serrate. _Subula._ an awl. _Subulate._ awl-shaped. _Sulcate._ furrowed. _Synoicous._ male and female fl. on same receptacle. _Terete._ cylindrical. _Thæca._ the capsule. _Tomentose._ covered with down. _Truncate._ having the point cut off. _Tumid._ swollen. _Turbinate._ shaped like a peg-top. _Vaginula._ the cellular sheath surrounding the base of the seta. _Vermicular._ narrow and wavy (like a worm). _Villi._ short leafy processes on the stem amongst the leaves. _Villous._ covered with villi. _Uncinate._ bent like a hook. _Undulate._ wavy. INDEX TO GENERA AND SYNONYMS. Amblyodon, 125 Amblystegium, 162 Anacalypta, 57 Andreæa, 21 Anodus, 38 Anœctangium, 139 Anomodon, 140 Antitrichia, 140 Archidium, 26 Arctoa, 39 Atrichum, 100 Aulacomnion, 105 _Barbula_, 66 Bartramia, 128 Bartramidula, 128 Blindia, 39 Brachyodus, 36 Brachythecium, 148 Bryum, 106 Buxbaumia, 99 Camptothecium, 147 Campylopus, 50 Campylostelium, 36 Catascopium, 132 Ceratodon, 49 Cinclidium, 124 Cinclidotus, 74 Climacium, 142 Conostomum, 132 Cryphæa, 184 Cylindrothecium, 142 Cynodontium, 39, 59 Daltonia, 184 _Desmatodon_, 58, 65 Dichelyma, 185 Dicranodontium, 44, 47, 49 _Dicranella_, 40, 63 Dicranum, 40 Didymodon, 58, 65 Diphyscium, 99 Discelium, 133 Dissodon, 134 Distichium, 58 _Ditrichum_, 62 _Dryptodon_, 86 Encalypta, 74 Entosthodon, 127 _Ephemerum_, 26 Eurynchium, 152