378 musci. 



being recorded in G. ovatum and Polytrichum, Dawsonia and 

 Lyellia, so that it forms an instance of the recurrence of a re- 

 markable structure in at least three sections of the family ; 

 although attached to the axis of the leaf, as those of G. ovatum, 

 to which leaves those of this Tortula have a considerable re- 

 semblance, they resemble rather those of Polytrichum. They 

 have appeared to me as a great number of confervoid filaments, 

 simple or generally branched, arising from the central line 

 which is thick and cellular. 



The cells contain green globules, and generally present ru- 

 diments of two or four from the apex of the terminal cell. 



Of the nature of these bodies I am quite ignorant, those of 

 Polytrichi may from their direction, and arrangement in lines 

 be considered perhaps as performing the same functions as 

 the leaf. They are rather analogous to gemmae, or in young 

 leaves the appendage has comparatively a large size with the 

 lamella of the leaf. 



Among the Weissias occurs a species perhaps identical with 

 W. pomiform Gr. and has in a remarkable degree, the habit 

 of Bartramaia. It is not a little singular, that the same very 

 simple nature of the Peristome occurs again in Entosthodon, 

 which has in a similar degree the habit of Funaria, a genus 

 closely allied to Bartramia. 



Musci of Assam and Kkasyah Mountains. 



Of these by far the greater portion were collected on the Kha- 

 sya Hills, an elevated tract of country, forming a portion of the 

 Eastern frontier of British India. The extreme distance from 

 Teryah Ghat, at the foot of the Hills on the southern side, to 

 Raneegaon on the northern side, does not exceed 60 miles ; 

 and that between Ohurra Punjee and Nunklow, both of which 

 may be said to be on the edge of the higher portion of the 

 plateau, 35 miles. 



The heights of the places situated on the route between the 

 above places, are as follows ; they are taken from Capt. Pem- 

 berton's " Report on the Eastern Frontier of British India 



