REVUE BRYOLOGIQUE 
_ rence from . crispum is at once evident ; in that species the cells 
are large, thin-walled, and not at all collenchymatous ; while the 
border is quite entire, composed of brown, elongate cells (as in 
M. punctatum) ; in M. pseudo-crispum (he cells are smaller, less 
_ evidently seriate, with the walls more or less incrassate, and 
_ distinctly, often strongly collenthymatous, while the border is 
. composed of paler, shorter cells, and is obtusely toothed, exactly 
_asin #. rostralum. (I should however mention that in the speci- 
_men from the original type the areolalion is scarcely collenchy- 
_ matous and much more like that of O. crispum, but the border is 
_precisely that of the other specimens and of M. rostratum). 
_ Moreover D" Levier possesses a single capsule of M. pseudo- 
_crispum Which has nothing in common with Orthomnion, but is 
_ pendulous, and from the drawing which he has sent me is quite 
_indistinguishable from M. rostratum. The accessory leaves, more- 
. over, are those of M. rostratum, not at all as in O. crispum 
= Itisperhaps worth while pointing out that two distinct species 
_ have been distributed under the same label in Bryotheca E. Levier 
— M. Ind. Or. curante cl. W. Gollan lecti, viz. « M. pseudo- 
_crispum C. M. ms., Nepalia, — distr. Khatmandu, Feb. Apr. 1900, 
leg. Col. K. N. Rana, det. Broth. n° 2132 ». The specimen of this 
in the Brit. Mus. is the plant above described, and certainly refe- 
 rable to . rostratum ; but that in the herbarium at Kew is quite 
different, and is clearly, Lthink, O. crispum. 
It should be stated that in vegetative characters there is little if 
_ anything lo distinguish ©. crispum from 0. trichomitrium. Mitten 
_in describing these species (Musci Ind. Or., p. 142) gives a single 
_ character only beyond those dependent on the organs of fructifi- 
cation, viz. the border to the leaves, which he describes as incras- 
_sate and of 4 rows of cells in #. crispum, narrow and of 3 rowsin 
M. trichomitrium. But this distinction become elusives when 
brought to the test, and I fiud the width of border far from being 
_ So mathematically exact as Mitten's description would imply; to 
give à single example from Mitten's own specimens, | find the 
border in leaves of O. crispum (n° 678 Hb. Hook. fil. & Thomson) 
quite as narrow as in O. trichomilrium, and consisting of 3 rows 
of cells only. Determinations of O. crispum therefore where based 
_ upon sterile syecimens must be taken with reservation. 
Some further determinations are as follows : 
_ N°° 677, 678, Hb. Ind. Or. Hook. fil. & Thomson are O. cris- 
_pum (4). 
= ()N.B The label of n° 678 in the British Museum gives Tonglo as 
the locality, while Singalelah is cited for n° 657, 677, 678. by Mitten in 
_ the original list, as quoted above. 
