106 TASMANIAN BRYOPHYTA, 



GRIMMIA APOCARPA. (L.), Hedw. 



Dark brown loose mats; stems decumbent, 1-2 cm., us- 

 uall\ unbra,nched. Leaves broadly lanceolate, patent, 

 smooth, acute, with a short colourless, usually dentate apex, 

 keeled, 2 m.m. ; margin closely revolute ; nerve dark, lost 

 in the apex ; perichaetials longer and rather more acute. 

 Capsule subhemispheric on a very short seta, reddish, 1 

 m.m. ; lid conic or shortly rostrate ; calyptra with a very 

 short base covering the lid only ; peristome teeth lanceolate, 

 dark red. 



In many specimens the colourless leaf tip is hardly 

 apparent, and the rostrum of the lid may be well develop- 

 ed or rudimentary on the same plant. The colum.ella 

 remains in the capsule after the fall of the lid, or some- 

 times falls independently. 



Common on damp rocks. 



GRIMMIA MUTICA, Hpe. 



Similar in habit and structure to G. apocarpa, only 

 more elongated ; leaves broader, less acute, apex without a 

 colourless tip. Capsule red, often nearly exserted. 



Mt. Faulkner, Mt. Field, Mt. Nelson. 



GRIMMIA CYGNICOLLIS, Tayl. 



Small, forming dense dark cushions on rocks, more or 

 less hoary from the colourless leaf tips ; stems seldom ex- 

 ceeding 5 m.m. Leaves ovate-la,nceolate, concave, smooth, 

 patent, dark green to nearly black, 1.5 m.m., with a den- 

 tate hair point usually of the same length ; margin plain ; 

 nerve slender, canaliculate, ending at the hyaline apex- 

 Seta flexed, slender, 3 m.m. ; capsule pale, broadly oblong, 

 obscurely ribbed, 1 m.m. ; lid from mamillate to shortly 

 rostrate ; calyptra a third as long as the capsule, with a 

 short, broiad, lacerated base; peristome teeth pale brown, 

 entire. Very close to G. pulvinata Sm. of the northern 

 hemisphere. 



Very common on hard rocks. 



GRIMMIA TRICHOPHYLLA, Grev. 



Generally in larger, looser tufts than the last, and 

 paler green; in dry situations dwarfed, and rather simi- 



