and particularly of the Genus Mnium. 
261 
Witness the most natural genus of Saxifraga. On the other hand, 
what slight marks are we glad to seize, in the grasses and umbelli- 
ferous plants, to mark genera which habit shows to be distinct ! 
As the furrowed spherical capsule 0? Baftramia therefore with 
ease reduces to that genus the Mnium chrysocomum of Dickson 
well as the fontanum and marchicum of Hedwig, which Nature 
indicates as belonging to it, and possibly his gphardcarpon also. 
though I have not seen the latter; so the fur roue d cylindrical cap- 
sule of Mnium will, unless I am greatly mistaken, bring together 
species closely allied to each other, and on many accounts unlike 
other mosses. If the cylindrical or sphaerical capsule be thought 
too slight a distinction, these two genera must be united under 
Milium, that being the oldest name ; but I should with difficulty 
assent to such an union. 
I shall conclude with the generic character of Mnium at length, 
and an enumeration of all the species that I have been able to 
determine with certainty. 
MNIUM. 
Capsula cylindracea, mox sulcata. Perislomium exterius dentibus 
sedecim, basi dilatatis : interim membranaeeum, laciniatum. 
Calyptra kevis. Pedicellus terminalis. 
1. Mnium andi*ogynum, monoicum, capsula recta operculo co- 
nico, foliis undique imbricato-patulis apice denticulatis. 
M. androgynum. Linn. 
DHL t.3l.fl. 
Habitat in Europ&. 
2. Mnium conoideum, monoicum ? capsula obovata recta, operculo 
subulato, foliis undique imbricato-patulis integerrimis. 
M. conoideum. Engl Bot. 1. 1239- 
Bryum 
