470 
IV. MUSCI. 
[Hypnum. 
Leaves ovate or ovate-lanceolate, acuminate 32. B. austrinum. 
Leaves ovate-cordate acute 33. B. remotifolium. 
F. Conferta. Leaves imbricating all round the stem, not squarrose nor secund, usually 
small and serrulate. Fruitstalk smooth (see B. plumosum in G.). Operculum beaked. 
Leaves ovate, gradually acuminate ; perichatial recurved .... 34. B. tenuifolium. 
Leaves broadly ovate, suddeuly acuminate ; perichsetial recurved . . 35. H. e/usum. 
Leaves oblong, piliferous ; perichsetial erect 36. B. aristatum. 
G. Rltabula. Leaves spreading, imbricate all round the stem, not squarrose, rarely 
subsecuud ; nerve reaching beyond the middle in the N. Z. species. Fruitstalk rough (ob- 
scurely so in B. plumosum). Operculum short, conical. 
Leaves ovate-acuminate, serrulate. Operculum acuminate . . . 37- H. rutabulum. 
Leaves ovate-lanceolate, acuminate, secund-falcate, serrulate. Oper- 
culum very obtuse 38. U. paradoxum. 
Leaves subsecund, ovate-lanceolate. Operculum very acute . . . 39. H. plumosum. 
H. Serpentia. Leaves imbricated all round the stem, not squarrose, rarely subsecund ; 
nerve short or reaching beyond the middle. Fruitstalk smooth. Operculum short, conic 
(see H. plumosum in G.). Usually very minute mosses. 
Leaves ovate-lanceolate 40. B. serpens. 
I. Stellata. Leaves imbricated all round the stem, small, spreading and squarrose. 
Fruitstalk smooth. Capsule not grooved. 
Leaves ovate-lanceolate, acuminate ; nerve reaching halfway . . .41. H. polygamum. 
Leaves ovate, acuminate ; nerve solid, continuous 42. 11. relaxum. 
Leaves ovate, long-acuminate ; nerve vanishing below the apex . . 43. B. decussatum. 
J. Acicularia. Stems stout, suberect, sparingly branched. Leaves imbricated all round, 
squarrose, large, very concave, tiaccid, serrate, nerveless. Capsule grooved or angled. Calvptra 
large, inflated. 
Leaves squarrose and recurved, strongly serrate above 44. H. aciculare. 
Leaves refracted from the middle, minutely serrulate above . . . 45. H. densifolium. 
K. Cochiearifolia. Stems stout or slender, prostrate, sometimes pendulous. Leaves 
imbricated all round, often oppressed, not squarrose or secund, very . concave and inflated, 
transparent, obtuse or apiculate ; nerve 0 or obscure. Fruitstalk smooth. Capsule not 
grooved. Operculum conical. 
* Nerve very short or 0. 
Stems 2-4 in. long. Leaves hemispherical, very obtuse .... 46 . H.cochlearifolium. 
Stems 2-3 in. long. Leaves broadly oblong, obtuse, cordate at the 
base 47. B. clandestinum. 
Stems 1-2 in. long. Leaves orbicular-quadrate, auricled at the base, 
round at the apex 48. B. chlamydophyllum. 
Stems 1 in. high. Leaves large, oblong, very concave, acute or acu- 
minate 49. B. inflatum. 
Stems ascending. Leaves broadly ovate, shortly acuminate . . .50. B. vagum. 
** Nerve produced to the middle. 
Stems 2-5 in. long. Leaves broad oblong, subacute 51. E. divulsum. 
L. Distichophvlla. Stems and branches compressed. Leaves inserted all round the 
stem, but distichous (the lateral only 2-farious in E. polystictum), flat or concave, nerveless 
or shortly 2-nerved. .Fruitstalk and capsule smooth. 
* Leaves nerveless. 
Stems 2-4 in., pinnately branched. Leaves subserrulate ; cells not 
papillose 52. B. extenuatum. 
