102 TASMANIAN BRYOPHYTA, 



DICRANUM MENZIESII, Tayl. 



Suberect, dark green, 10-12 cm., the stem clothed with 

 short white fibrils. Leaves slender, filiform, 12 m.m., from 

 a short sheathing base; margin serrate above; nerve 

 round, continuous ; alars very numerous in a broad band, 

 brown, quadrate ; perichaetials short, sheathing, pilif erous ; 

 cells of the lower half of sheath rectangular, those above 

 small and quadrate. Seta slender, often shorter than the 

 leaves ; capsule cylindric, arcuate, striimose, 2 m.m. ; lid 

 bent, nearly as long. 



Mount Wellington, Tasman's Peninsula, etc. 



DICRANUM SETOSUM, H.f. et W. 



Glossy, yellow, and brittle, 4-6 cm. Leaves patent,, 

 from a broad base, tapering to an acute apex, 6-8 m.m. ; 

 margin closely serrate above, plain below^ ; nei-ve narrow, 

 flat; cells very narrow, linear, strongly incrassate; alars 

 not numerciis, quadrate, in a well-defined patch ; perichae- 

 tials very long sheathing, with a piliferous brittle apex- 

 Seta 2 cm. ; capsule slightly arcuate, cylindric, 2.3 m.m. ; 

 lid with a slender beak, rather more than half the length 

 of the capsule. 



Common in forests. 



DICRANUM BILLARDIERI, Schw. 



Densely matted, suberect, yellow, glossy, 4-6 cm. 

 Leaves patent, concave, tapering from a broad base to a 

 slender apex, 6-10 m.m. ; margin more or less obscurely 

 or irregularly serrate, or subspinulose towards the apex, 

 otherwise plain ; nerve nan*ow, thin, and flat, in some in- 

 stance® hardly apparent, lost towards the apex ; cells linear, 

 incrassate, alars numerous, brown quadrate ; perichaetials 

 sheathing as long as or longer than the leaves, obtuse or with 

 a short point. Seta 2 cm. ; capsule cylindric, arcuate, stni- 

 mose, 2.5 m.m. ; lid with a long slender beak : peristome 

 incurved when dry . 



Very common in forests. Variable. 



Var : angustinerve. Leiaves long; nerve very narrow. 

 Seta shorter, and encased in the perichaetials to or almost 

 to the capsule. Ck^mmon. 



Var : rigens. Elongated. Peiristome gaping when dry. 

 In deep crevices between rocks. 



Var: latifolia. Leaves livid, 4 m.m., base broad, only 

 shortly attenuated. At a high altitude, Cradle Mountain^ 



