Musci. 357 



41. Pogonatum. Ciilyptni ('opiously villous, the hairs attiidicil to tlic ain-x and covering tlie 



ca[i.siiie. (Xlicrwise as the last. 



♦ * Cajisiile distinctly aiiophysate, 4-angled ; teeth 64. 



42. Polytrichum. Calyptra and rigid leaves as in Pogonatum. Cajisule quadrangular-ovate 



or -oblong, separated by a stoniatose band from a discoid or subglobose aiiophysis. 



Tribe VII. lU'XBAUiMIyE. Jlinute nearly acaulescent annuals or biennials, on the ground 

 or rotting wood. Calyptra conic or cylindric-canipanulate. Cajjsule large, strongly 

 gibbous-ventricose. IVristoine double, the outer rudimentary or of one or more rows of 

 small more or less perfect teeth, the inner a 16- or 32-plicate membrane twisted into a cone. 



43. Buxbaumia. Cajisule obliciuc, oblinuely flattened above, long-pedicelled. Inner peristome 



3'2-plicate. 

 III. Capsule dehiscent by an operculum. Flowers all axillary, bml-like. Perennials. 



TitiiiK, VIII. FONTINAI/K/E. Floating, slender. Leaves 3-ranked, smooth, with narrow 

 linear or rhombic areolation. Flowers diiEcious ; perichaitium elongated. Calyptra conic 

 or cucuilate. Capsule immersed or exserted, erect, ovate to cylindrical ; operculum 

 conic ; annulus none. IVristome double, of 10 linear teeth, in pairs, and as many alternate 

 cilia nioie or less united by crossbars. 

 41. Foutinalis. Leaves nerveless, ovate or ovate-lanceolate; areolation linear-rhombic. Cap- 

 sule sessile, immer.scd. Teeth coherent at the apex, hygroscopic ; the inner cilia form- 

 ing a more or less perfectly tessellated cone. 

 4.'i. Dicheiyma. Leaves narrow, falcate, folded, costate : areolation rhombic. Capsule pedi- 

 cellate. Teeth dehiscing, scarcely hygroscopic ; cilia united or free. 



Tkice VI 1 1. HYPNK/E. Creeping on the ground, trees or rocks, the erect or ascending or 

 pendulous secondary stems branching irregularly, fasciculately, or pinnately. Leaves 

 several-ranked, niostly broad, usually more or less imi)erfectly costate or bicostate ; areola- 

 tion various. Calyptra usually cucuilate and naked. Peristome double, ns in Mnium, 

 with or without ciliohe and the basal membrane often narrow, or the inner peristome rarely 

 wanting (in Fabronia). 



* Capsule symmetrical, mostly erect : areolation parenchymatous. 

 +- Stems irregularly or fasciculately branched : capsule long-pedicelled : leaves smooth and 

 shining (except in n. 4',t, 50), complanate in n. 47. 



++ Areolation very loose : flowers monoecious. 



46. Fabronia. Minute. Leaves not complanate, ovate-lanceolate, filiform-acuminate, dentate 



or ciliate, obsoletely costate. Calyptra cucuilate. Capsule erect, subspherical. Peri- 

 stome simple. 



47. Hookeria. Prostrate, succulent. Leaves complanate, ovate or rounded, nerveless or bi- 



costate. Calyptra conic-mitriforni. Capsule cernuous or horizontal. Peristome double, 

 without ciliohe. 



+t +t Areolation narrow or linear: flowers dia-cious. 



48. Pterogonium. Blanches arcuate when dry. Leaves bicostate at base. Calyptra slightly 



hairy. Processes half as long as the teeth, on a broail membrane : ciliolre none. 



49. Pterigynandrum. More or less prostrate. Leaves rough-papillose on the back. Peri- 



touK'-tceth remotely jointed, the processes imperfect and ciliolre none. 

 ++ ++ +f Areolation minute and punctiform : leaves densely papillose both sides: flowers dioecious. 



50. Anomodon. Stems ascending or erect. Leaves costate. Processes shorter than the teeth, 



without ciliohe. 



+- +- Stems pinnately or bipinnately branched : flowers dioecious. 



+t Capsde very shortly peiliccliate : leaves smooth and shining; areolation narrow or linear. 



Secondary stems erect, ascending, or jiendulous. 



51. Neckera. Leaves comjdanate, .scarious, ovate-lancpolate, scarcely costate. Processes as 



long as the teeth ; ciliol.'c none. 



52. Antitrichia. Leaves not complanate, ovate-acuminate, costate to the middle. Processes 



shorter, fugacious. 

 ++ ++ Capsule short- or long-pedicellate : leaves smooth or papillose ; areolation oval-rhombic or 



punctiform. 



53. AlsicL Branching stems often circinate when dry. Processes shorter than the teeth, with 



or without ciliola?. 

 ♦ * Capsule unsymmctrical, long-pedicelled, more or less cernuous : ciliola^ present: areolation 

 mostly narrow or linear. 



54. Hypnum. Leaves mostly smooth and shining, rarely complanate, often secund. 



