GunniancB. 



N. O. Musci. 



TAB. CCXLVIII 



Tridontium Tasmannicum. J. Hook. 



Seta terminalis, exserta. Capsnla turbinata. Peristomium sim- 

 plex; dentibus 16 elongatis, siccitate reflexis; singula e ciliis 

 tribus articulatis magis minusve connexis formata. Calyptra 

 mitriformis, hiuc fissa, — Muscus aqiiaticus. Caules elon- 

 gate parce {nunc innovationibiis) ramosi^ rigidly Jlexuosi^ laxe 

 ccespitosL Folia taxe undique disposita, patentia^ lineari- 

 lanceolata^ opaca^ ohfusa^ nervo valido fusco fere ad apicem 

 attingente^ supra canaliculata^ margine omnino integerrima : 

 pe r i chae t i al i a angustiora^ subacuminata : texlura compacta^ 

 cellulis minutissimis. Seta capsulaque intense fiiscce rigidce. 

 Operculum conicoJonge rostratum. Calyptra fusca^ rigida^ 

 ohlongo-acuminata^ hinc basi usque ad medium fissa. 

 Tridontium Tasmannicum. 

 Hab. Ben Nevis, Van Diemen's Land. Ronald GunUy Esq, 



This remarkable Moss has been sent to me, by Mr Gunn, 

 with many others, from Van Diemen's Land. It was growing 

 in a creek at a considerable elevation on Ben Nevis, the water 

 trickling over it; in such a locality that it must have been sub- 

 merged for nine months in the year. Its habit in this respect 

 approximates it to Scouleria and Wardia^ with which it further 

 agrees in the dark-brown colour and rigid texture of the capsule. 



J. Hooker, 



Fig* 1. Leaves- /. 2. Perichaetial leaf. / 3. Capsule and 

 operculum, f^ 4. Calyptra. /. 5. Capsule and peristome, f. 6. 

 Teeth of the peristome : — magnified. 



