Capsule on a proper pedicel. Vaginule sessile.
10. A s t o m u m . Plants sinail. Operculum not easily detached. Calyptra
cuculiate. Flowers moncecious.
11. Gymnostomum. Plants larger. Operculum long-beaked. Calyptra
cuculiate. Flowers dicecious.
12. A n o e c t a n g ium . Plants cespitose. Stems dichotomous, as in
Pleurocarpi.
33. A n o d u s . Plants very short. Capsule small, obovate, long-pedicellate.
Calyptra cuculiate. Flotvers luonoicious, without para-
physes.
38. P h a r om i t r iu m . Capsule immersed, globose. Calyptra oblique,
plurilobate. Leaves with a long white awn.
39. Pottia. Capsule small, witli a broad orifice. Calyptra cuculiato.
Leaves with a loose hyaline basilar areolation.
48. H e d w ig ia . Capstile obovate, immersed. Calyptra mitriform.
Leaves hyaline, cibate at the apex.
49. P s e u d o b r a u n ia . Capsule long-pedicellate, pyriform. Calyptra
narrow, cuculiate.
31. A m p h o r id iu m . Capsule striate, urceolate. Calyptra cuculiate.
59. E n o a l y p t a (1st Section). Capsule oblong-cylindrical. Calyptra
very long, cylindrical-campanulate.
60. C a lym p e r e s . Calyptra twisted, persistent, plicate, constricted
at base.
65. S c h i s t o s t e g a . Plants small, delicate, frondiform. Capsule
small, globular, pedicellate. Calyptra mitriform.
70. P y r a m id u la . Calyptra large, tetragonal, enclosing the capsule
and dehiscent by lateral slits.
71. A p h a n o r h e g m a . Capsule globose, nearly sessile, splitting transversely
in tlie middle at maturity.
72. Physcomitrium. Capsule pedicellate, globose or turbinate.
Calypti-a five-lobate, with a long terete straight beak.
* * Mouth of the capsule furnished with teeth (peristome).
Peristome single.
,+H- Teeth of the peristome 4.
62. Tetraphis. Capsule long-pedicellate, linear. Calyptra mitriform.
Stams conspicuous.
63. T e t r o d o n t iu m . Capsule ovate. Calyptra large, mitriform.
Plants small, nearly stemless.
« <-<■ Teeth of the peristome 8.
28. O c t o b le p h a r u m . Capsule ovate, pedicellate. Leaves thick,
merahranaceous, of two or more layers of cells.
tH- «■ t-i- Teeth of the peristome 16. Calyptra mitriform.
= Calyptra plicate.
50. C o s c in o d o n . Teeth cribrose. Operculum very large.
51. P t y o h o m i t r iu m . Teeth narrowly linear, deeply bifid to near the
base.
52. Glyphomitrium. Teeth entire. Calyptra large, covering the
capsule to below the base, plicate and cleft at base.
56. O r t h o t r io h u m (1st Section). Capsule emerging. Calyptra
hairy, campanulate-mitrate. Leaves short, striate when dry.
55. U l o t a (2 species). Capsule longer-pedicellate, defluent into a long
colluin. Calyptra yellow, hairy, split at base.
= = Calyptra not plicate.
36. Brachyodus. Plants very small. Teeth hyaline-pnnetulate.
more or less perforate. Calyptra 5-lobed at base, split on one
side to near the apex.
37. Campylosteleum. Capsule thin, on a long slender geniculate
pedicel. Teetli cleft to the middle or lower. Calyptra lono"-
subulate. °
26. Conomitrium. Calyptra short-conical, solid. Teeth entire or
laciniate at the apex. Plants floating.
45. Cinclidotus. Calyptra split at base on one side. Teeth cancellate,
multiiid, membranous.
46. Grimmia. Teeth lanceolate, entire, cribrose or 2-3-cleft at tlie
apex. Capsule oval, short-pedicellate. Leaves smooth, generally
hair-pointed.
47. Racomitrium. Plants of large size. Calyptra subulate. Teeth
2-3-cleft into filiform segments.
66. Dissodon. Calyptra large, constricted at base. Teeth short or
truncate, bigeininate.
67. Tayloria. Teeth long, loricate, entire or bifid, attached below
the orifice.
69. Splachnum. Capsule wdth large apophysis. Teeth higeminate.
Calyptra small, conical, entire.
++++«.++ Teeth of the peristome 16. Calyptra cuculliform.
=: Leaves two-ranked.
25. Fissidens. Leaves frondiform. Teeth articulate, cleft to the
middle into two unequal segments.
31. Distiohium. Leaves subulate. Teeth linear, nearly entire, or
bifid, or lacerate.
32. Eustiohia. Leaves imbricate, carinate-compressed, with long
flexuous points. Fruit unknown.
= = Leaves spreading every way.
a. Capsule cernuous-inclined, unequal.
15. Oreoweisia. Teeth abruptly lanceolate-subulate from an enlarged
base ; articulations prominent. Leaves serrulate.
17. Cynodontium. Capsule short-ovate; colluni distinct, regular or
struinose. Segments of the teeth unequal. Leaves serrulate at
apex.
18. Dichodontium. Capsule solid; collum short. Teeth large, bifid
or trifid to below the niiddle. Leaves sheathing at base.
19. Trematodon. Capsule long-pedicellate, narrowed into a long
apophysis. Teeth nearly entire or irregularly bifid to the base.
21. Dioranella. Plants small. Leaves smooth, squarrose or secund.
Teeth as in JJicranum.
22. Dicranum. Plants large. Teeth regularly bifid to the middle,
closely articulate. Areolation linear at the base, quadrate and
inflated at the angles.
27. Leucobryum. Plants soft, yellowish, spongy. Leaves without
costa. Teeth as in Dicranum.
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