192 TASMANIAN BRYOPH^TA, 



R.S. TAS. 



series of cells; endostome when present rudimentary. 



Antheridia, in most genera, numerous in a terminal disk. 

 A natural group readily known by the leaf structure. 



Bartramia. Densely tufted, rarely nlongated, antheridia in 

 the terminal axils but not gathered into a conspicuous 

 disk. 



Bartramidula. Decumber.t, very small. Leaves sauill, 

 ovate, imbricate, the nerve vanishing below the apex. 



Philonotis. Elongating and vaguely branched. Leaves 

 small, the cells thin walled, rectangular, not much re- 

 duced towards the base. Antheridia in a terminal disk. 



Breutelia. Coarse plants, vaguely branched. Leaves long, 

 tough; basal cells quadrate, which usually extend as a 

 band up the margin. Antheridia in a terminal disk. 



CoNOSTOMUM. Tufted. Leaves with strongly excurreii t nerves. 

 Peristome well developed, th© teeth adherent at the apex, 

 forming a cone over the mouth. 



Bartramia Hedw. 



Erect, dichotomously branched, usually small in dense 

 tufts, cuticle of tlie shoot of small cells. Leaves opaque 

 lanceolate to narrow-subulate, papillose; cells small, rec- 

 tangular. Capsule globose, striate; lid shortly conic; 

 calyptra fugacious; exostome of 16 teeth or none; en- 

 dostome a narrow basal membrane with 16 keeled proicesses. 

 Antheridia in the terminal axils, not forming an ex- 

 panded disk. 



Stems elongated Norvegica 



Stems short, tufted. 



Leaf-base rectangular. 



Leaves spreading... . . papillata 



Leaves erect fragilis 



Leaf-base not rectangular stricti folia 



Bartramia Norvegica Lindb. 

 Syn.: B. Halleriana Hedw. 



Stem elongated and pendulous, often 12 cm-, with few 

 irregular branche®, at a high altitude reduced to 3 cm- 

 and erect. Leaves squarrose, long and slender, from a 

 sheathing base, 10 mm.; margin spinulose, recurved; nerve 

 continuous ; cells rotundo-quadrate, small, incrassate, elon- 

 gated in the sheathing base. Seta on a short lateral 

 branch, 5 mm. ; capsule inclined, oblique, sulcate, globose ; 

 exostome teeth short, lanceolate, dark brown. 



Very common on the slopes of mountains. 



