352 |. CATALOGUE OF CRYPTOGAMIC PLANTS. 
Hedw. Sp. Musc. t. 14. Neckera densa, Wils. Lond. Journ. Bot. 
v.4.¢.10. N. luteovirens, Tayl. l. c. 1846. p. 59. 
b. Idem. A state with the leaves broken. 
61. Pilotrichum Jamesoni (Tayl), C. Muller. Cryphea Jamesoni, 
Tayl. Lond. Journ. Bot. 1848. p. 192. 
b. P. ramosum (Wils.), Mitten ; monoicum, caule longiusculo rigido, 
ramis divergentibus et recurvis, foliis ovatis breviter acuminatis 
concavis, marginibus reflexis, nervo ultra medium evanido, peri- 
chætialibus oblongis superne subulato-attenuatis, nervo ex apice 
ad medium folii descendente, theca immersa cylindrica subsessili, 
operculo conico breviter oblique rostrato, peristomio externo € 
dentibus angustis albidis, interno angustioribus et paulo breviori- 
bus, calyptra glabra.—Cryphea ramosa, Wiis. in schedula. 
A fine species, differing from P. Jamesoni, Tayl. in its shorter and 
wider leaves, with the nerve vanishing below the point, and in the 
rostrate operculum. In P. Jamesoni the nerve is excurrent, the leaves 
are serrate, particularly towards the point, and the operculum is shortly 
conical. 
62. Neckera Jamesoni, Tayl. Lond. Journ. Bot. 1846. p. 59. The 
perichætial leaves of this species are almost subulate, those of 
N. Douglasii are oblong, obtuse, cuspidate. 
63. N. obtusifolia, Tayl. Lond. Journ. Bot. 1848. p. 193. 
64. N. debilis (Wils.), Mitten ; monoica, caule flexuoso gracillimo pen- 
dulo ramoso, foliis patentibus laxis longe lanceolato-subulatis basi 
decurrentibus superne denticulatis, nervo infra 1 evanido, e cellulis 
laxis teneris levibus alaribus inconspicuis areolatis, perichzetiali- 
bus latioribus enerviis, theca in pedunculo scaberrimo oblongo- 
cylindrica curvula et paululum inclinata, operculo breviter conico, 
peristomio externo dentibus flavidis, interno processibus pertusis 
longioribus in membranam exsertam positis, calyptra diminuta 
levi.—Leskea debilis, Wils. in schedula. 
Very closely resembling WN. aciculata, but readily distinguished by 
its more shortly-nerved leaves, more cylindric capsules, and shortly 
conical opercula. The leaves of both are of the same structure, and, 
. except under a very high power, appear to be smooth; but there 
. exist here and there very minute papilla, which are, however, too 
. small to be rendered visible by merely bending the leaf.— The place 
. of these species appears to be near to AN. nigrescens, from which 
