376 Wilson's notes on British muscology. 



this Moss is essentially and permanently distinct from Weissia 

 confroversa. 



8. GEdipodiuni Griffithiamm. — The seta tapers gradually 

 from the capsule down to the vaginula, and seems every- 

 where to be fistulous, having a loose medullary centre ; it 

 may therefore be considered as entirely consisting of an apo- 

 physis, and thus the capsule is properly sessile. The sporu- 

 lar sac in this Moss presents considerable affinity to Hyinen- 

 ostomum. It is in an early stage connected with the conical 

 apex or prolongation of the columella, (termed the metula 

 by Mr Valentine), but in the ripe capsule it forms a loose 

 membranous border within the mouth of the capsule. The 

 seeds are connected in fours. 



9. Anictangium imberhe. — Some confusion has arisen 

 respecting this Moss. The genuine species so called, was really 

 detected in Ireland by the late Miss Hutchins. It differs 

 from A. ciliatum, in its conical prominent operculum, coloured 

 calyptra, and in the recurved margins of the leaves. In 

 habit, this Moss has very considerable resemblance to Grim- 

 mia apocarpa. It is found rather plentifully near Llanberis, 

 and near Beddgelert in N. Wales. 



10. Diphyscum foliosiim, — The figure of the peristome in 

 the admirable Bryologia EuropcBO, of Bruch and Schimper, 

 is not quite accurate. No distinct loose outer teeth are 

 visible, and the parts so represented are probably pulveru- 

 lent fragments of the margin of the operculum, (perhaps of 

 an imperfectly formed annulus.) Traces of outer teeth do 

 nevertheless exist at the angles of the plicate membrane 

 forming the peristome, as may be most satisfactorily observed 

 in an annular or transverse section of the part carefully made 

 with a sharp instrument. It may not be amiss here to state, 

 that careful dissection under the microscope, proves that the 

 peristomes of Mosses usually termed single, do in many in- 

 stances, (and perhaps might in all) show that they consist of 

 two separable and differently coloured lamina; this obtains in 

 the Cape Moss called Wardia kygrometrica, in Trematodon 

 hnfficollis, and in the most unlikelv of all Mosses CincUdotus 



