236 TASMANIAN BRYOPKYTA, 



R.S. TAS: 



tips, 1.3 mm.: margin revolute ; surface obtusely papil- 

 lose ; perichaetials long, oblong, thin plicate. 



Common on rocks, Mt. Wellington, Mt. Nelson, etc. 



Hedwtgia Elirh. 



Stems clichotomous or irregularly branched. Leaves 

 plurifarious, imbricate, harsh, brittle, hyaline at the tip ; 

 both surfaces closely nodulose-papillose; nerve none; cells 

 small, oblong or quadrate, strongly incrassate, becoming 

 linear in the centre towards the base ; perichaetials longer, 

 narrower, softer, inner ones tipped with long woolly hairs. 

 Capsule immersed or shortly exserted on a very short term- 

 inal seta, globose to oblong; lid nearly flat; calyptra 

 minute conic ; peristome none. 



Of similar habit to some Grinnnias but without a nerve.. 



Hedirigia alhicdu.^ (Web.) Lindb. 



Stems rather wiry, depressed, forming loose mats, nearly 

 black with livid green tips, hoar}'- from the white leaf tips, 

 with few vague branches. Leaves patent ovate-oblong with 

 an acute, white apex, 1.8 mm. ; margin plain serrate to- 

 wards the apex. Capsule enclosed in the perichaetium, 

 turbinate, pale brown, mouth wide, with a red annulus, 1 

 mm . 



Common on rocks, Slopes of Mt. Wellington, Mt. Nelson, 

 etc. 



Fam. 13.— LOPHIDIACEAE. 



Habit various, erect to decumbent, simple to pinnately 

 branched. Leaves in three rows, two of which are lateral 

 and complanate, the third row smaller, median, dorsal or 

 ventral according to the habit of the species ; nerve from 

 obsolete to excurrent; cells rotund to oblong, medium 

 sized. Seta long or short placed in the axil of a median 

 leaf; lid short conic or rostrate; calyptra small mitriform 

 rarely cucullate ; peristome double ; exostome of 16 slender 

 lanceolate teeth; endostome of 16 slender processes from 

 a basal membrane ; cilia generally absent. In Catharom- 

 nion the exostome is absent. 



A group of plants intermediate between Neclerareae and 

 PteryyopltijIJaceae best distinguished by the peculiar leaf- 

 age. 



Ehacopilum. Slender, decumbent; seta long. 

 LoPHiDiUM. Erect, copiously pinnate, complanate. 

 Catharomnion. Pinnate, complanate, leaves with long 

 cilia. 



