212 TASMANIAN BRYOPAYTA, 



R.S. TAS. 



Mniodendron comosum (Lab.) 

 Stem erect, about 5 cm., bold, closely covered with brown 

 fibrils and divaricate leaves. Branches 1.5-2 cm. iii a 

 defined fasciculus at the top of the stem. Leaves lanceo- 

 late froim a rather broad base, 4 mm. ; margin irregularly 

 serrate above; nerve thick, excurrent in a rather long 

 point; cells very narrow linear, slightly broader at the 

 basal angles, not strongly incrassate. Seta. 3 cm., reel; 

 capsule cernuous or pendulous, with eight grooves, deep 

 red, neck tapering, black, 3 mm.; lid acutely rostrate, 

 shining, 3 mm. ; calyptra short, smooth. 

 Common in damp forests. 



Mniodeyidron comatum (CM.) 

 Syn. : Isothecium Colensoi H.f. et W. 



Habit of M. comosum, only the branches usually longer 

 and dark green, the stem with but little clothing of rhi- 

 zoids. Leaves lauceolat© from a relatively narrow base, 

 5.5 mm. ; margin, thickened, rather coarsely spinulose, 

 exserted nerve very long; cells cylindric, not long, more in- 

 crassate and regular than in the other species, in the upper 

 part and near the margin short oblong-rhomboid, those of 

 the basal angles quadrate enlarged. Other details as in 

 M. comosum. 



Slopes of Mt. Wellington. 



Mniodendron Sieberi CM. 

 Svn. : Isothecium Sieheri CM. 

 Habit and appearance of M. comosum only tlie branches 

 more dispersed. Leaves divaricate, lanceolate from a 

 broad cordate, sub-auricled base, very acute, margin 

 slightly thickened with few sjDinulose teeth above, 4 mm- ; 

 nerve exserted in a long filiform point; cells very long 

 linear. Other features as in M. cojuosiun. 

 Damp gullies, Mt. Wellington ; Ida Bay. 



Ehaphidostegium Schimp. 

 Medium to small mosses with, in most instances, a near 

 resemblance to Stereodon, decumbent, elongated, rarely 

 short, pinnate. Leaves small glossy, generally falcate and 

 secund, lanceolate, acute; nerves if present 2, short and 

 faint; cells vermiform with an alar patch of 3-4 large ob- 

 long cells. Seta slender; capsule small, oblong, straight, 

 erect or inclined ; lid conic with a long slender beak ; 

 peristome pale yellow, the exostome teeth broad below witJi 

 a slender bordered apex; endostomei membrane deep, pro- 



