22 TASMJINIAN BRYOPHYTA, 



HOLOMITRIUM PERICHAETIALE, Brid. 



Syn : Symblepharis perichaetialis, Wils. 



Stems depressed, branches few, erect, dark green. 

 Leaves linear, from a short, narrow sheathing base, patent 

 to squarrose, undulate, 3.5 m.m. ; margin undulate, plain; 

 apex sub-acute. Perichaetials longer sheathing; cells ver- 

 miform ; nerve excurrent in a long hair point. Capsule 3 

 m.m. ; lid very slender, as long as the capsule. 



On deadwood^ Koonya. 



BARBULA, Hedw. 



Habit that of Tortula, but generally tinged with brown. 

 Leaves small, lanceolate to ovate, tapering from a broad 

 base to an acute or sub-acute apex ; nerve vanishing or 

 shortly excurrent; cells small papillose, rotundo-quadrate, 

 the basal ones small and rectangular. Seta long ; capsule 

 oblong to cylindric ; calyptra cucullate ; lid conic to ros- 

 trate ; peristome from short incurved to long and twisted, 

 usually with a short or no basal membrane. 



Distinguished from Tortula only by the ferruginous 

 colour and acuminate leaves. The two genera are often 

 combined. 



Nerve vanishing in apex. 



Lid conic. Peristome short ••• rubella. 



Lid rostrate. Peristome long australasiae. 



Nerve continuous or excurrent. 



Perichaetials very long calycina. 



Perichaetials short. 



Margin revolute subtorquata. 



Margin revolute in lower part only 



, unguiculata. 



BARBULA RUBELLA (Hoff), Mitt. 



Loose, procumbent, dark green, in the younger pro- 

 tions becoming ferruginous red ; stems slender, mostly 1 — 2 

 cm. Leaves patent, slightly recurved, nearly flat, oblong 

 lanceolate, rather obtuse, but with usually a short apiculus, 

 1.5 m.m.; cells small, papillate, rather opaque; midrib 



