NEW MUSCI AND HEPATICÆ. 337 
membrane lying within the mouth of the capsule divided into 
sixteen contiguous, very short, truncate teeth. Perichetium 
much wider than the shoots, and having closely adpressed 
leaves, the innermost of which have elongated points. The 
branches have some resemblance to those of Hypnum Halleri, 
Hedw., but are many times more slender, and the leaves are 
not recurved. 
Hypnum, Linn. 
1. H. erassicollum, Tayl. Caule procumbente, repente, sub- 
pinnato; foliis imbricatis, patentibus, rotundato-ovatis, 
_apiculatis, concavissimis, subdenticulatis, enerviis; pedi- 
cellis. sparsis, tenuibus, levibus; capsula cernua, ovata, 
basi apophysata; operculo brevirostro.— On bark, Pichin- 
cha; Prof. W. Jameson, Nov. 1846. Demarara; Dr. Gre- 
villes Herb. 
1-2 inches long, the Pichincha specimens green, those from - 
En arara yellowish-green. ^ Pedicels bent down at their 
Tu summits, Capsule with a wide mouth and very distinct apo- 
at the base. Peristome pale brown; the inner with 
Sixteen Zaciniæ, having single filiform processes interposed. 
The short straight beak of the lid will keep ours distinct from — 
H. molle, Dicks., as well as the more numerous and more 
nive of the latter, which, too, have a more Be 
: nerve and their apices entire. | 
> H. ulicon, Tayl. Caule adscendente, Reno, vage 
 Temoso; folis laxis subsquarrosis, subplicatis, cordatis, 
i acuminatis, mediotenus tenuinerviis, apice subserrulatis, 
: sparsis, levibus; capsula suberecta, ovata, basi 
‘Strumosa ; ; operculo longirostro.—On Pichincha ; D us run 
b ers Nov. 1846. = = : 
Stems 2-3 inches long, branches rather short, slightly : 
" Leaves pale green, very thin, their le nticul: 
Servable only under a highly magnifying lens. Perichæti 
pale, itt the main stem. Interior peristome 
