128 TASMANIAN BRYOPHYTA, 



RHIZOGONIUM DISTICHUM, Brid. 



Stems simple, 1-2 cm. Leaves distichous, in one plane, 

 asymmetric, broadly elliptic trapezoid, slightly acuminate, 

 l.V m.m. ; margin plain, with few irregular, bold serrations 

 above; nerve narrow, lost below the apex; cells very irre- 

 gular, quadrate, thin walled, mostly 12-16 u. Seta in- 

 serted at the base about 2-3 cm. ; capsule inclined, cylin- 

 dric, 2.5 m.m., mouth broad, constricted just below it; lid 

 conic-rostrate, short, oblique. 



Slopes of Mt. Wellington. 



RHIZOGONIUM NOVAE-HOLLANDIAE, Brid. 



Stems simple, 2-3 cm. Leaves distichous, in one 

 plane or secund, patent ovate, 1-1.5 m.m., margin usually 

 serrate above, otherwise plain, and slightly or not at all 

 thickened ; nerve bold, shortly excurrent. Cells as in R. 

 clistichum. Seta from the base 2-3 cm. ; capsule inclined, 

 cylindric, 2.5 m.m. ; lid rostrate, oblique, half as long. 



Mt. Wellington, Mt. Hartz, etc. 



HHIZOGONIUM ARISTATUM, Hpe. 



Stems simple, 3-4 cm. Leaves patent, close together, 

 distichous in one plane, ovate to ovate-lanceolate, acute. 1.5- 

 2 m.m., margin with a strongly thickemed border, generally 

 obtusely and irregularly serrate above, nerve bold excur- 

 rent ; cells rather large, irregular, quadrate, averaging 17 u., 

 scarcely incrassate. Rest not seen. 



Near Frenchman'si Cap, Florentine Valley. 



RHIZOGONIUM BIFARIUM, Schimp. 



Stems with a fascicle of branches above 1-2 cm. 

 Leaves distichous, arranged in one plane, narrow elliptic, 

 acute 1.5 m.m.; margin bordered and spinulose, some of 

 which at least are double ; nerve rather thick, often 

 spinulose, percurrent; cells hexagonal, irregular, thin 

 vvralled, mostly 12-16 u. Seta 2 cm., arising from just be- 

 low the branches ; capsule inclined, oblique, broadly ob- 

 long, 1.5 m.m.; lid broadly conic, with an acute black tip. 



Slope® of Mt. Wellington. Common in damp gullies 

 on dead wood. 



