13rj TASMAIsIAN BRYOPHYTA, 



GONIOBRYUM SUBBASILARE (Hook), Lindb. 

 Syn : Rhizogonium subbasilare, Hook. 



Stems erect, pale sage-green, usually with few irre- 

 gular branches, 2-3 cm. Leaves lanceolate, subacute, 2.5 

 m.m. ; margin sharply serrate, sometimes slightly thiclv- 

 ened ; nerve slender, vanishing in the upper third. Seta 

 3.4 cm.; capsule 3 m.m., mouth wide when dry, peristome 

 pale. 



On rotten wood, slopes of Mt. Wellington, Cradle 

 Mountain, Mt. Bischoff, etc. 



GONIOBBYUM PELLUCIDUM (Hfw.), Lindb. 



Syn : Rhizog'onium pcllucidum Mitt. 



A similar plant in every detail to G. subbasilare, only 

 the leaf slightly more thickened on the margin, and the 

 marginal teeth are in pairs, also the nerve approaching 

 the apex more. 



Not present in Tasmanian collections. 



MITTENIA, Lindb. 



Branches erect, simple, from a creeping rhizome. 

 Leaves distichous, complanate, except below the fertile apex, 

 vertically or obliquely inserted, the lower wing broadly de- 

 current; cells rather large, quadrate, thin-walled. Seta 

 terminal; capsule oblorg, erect; lid rostrate; calyptra 

 mitriform, narrow, or shortly split on one side; peristome 

 double, exostome of 16 filiform, dark brown, closely articu- 

 lated teeth, nearl}^ as long as the capsule; endostome of 16 

 very short, filiform, brown, cilia. 



MITTENIA PLUMULA (Mitt.), Lindb. 



Syn : Mniopsis plumula. Mitt. 



Delicate pale bluish-green, 2-3 cm. Leaves ovate to 

 oblong, subacute to ve«ry obtuse, '!-1.5 m.m. ; margin plain ; 

 nerve va,nishing above the middle. Seta, 3-4 m.m. long; 

 capsule, 1.2 m.m., smooth, pale brown; lid dark, nearly 

 as long ; perijsitom.e teeth veiy slender, dark, nearly as long 

 as the capsule. 



Mt. Wellington, Mt. Bischoff, George River. 



