NEW ZEALAND, TASMANIA, ETC. 99 



improbable that the original specimens were intermixed. As to the 

 remark in * Fl. New Zealand ' that P. giganteum and P. longisetum may 

 be forms of P. M.agellanicum, with equal justice might all the tetragonal 

 capsuled Polytricha be referred to P. commune, 



5. POLTTRIOHUM, L. 

 P. juniperinum, Hedw. 

 Hah. Tasmania, Elliott Rivulet, Mr. Archer ; and elsewhere, Mossman. 



P. commune, L. 



Hah. Tasmania, Cheshunt, Mr. Archer. 



XYIII. Sphagnace^. 



1. Sphagnum, Bill. 



S. cymbifolium, Dill. 



Hab. Tasmania, Mr. Archer. 



S. Novo-Zelandicum {Mitten). S. cymbifolio simile, caule strato 

 unico cellularum inanarium corticato foliis obovatis lingulatis apice 

 obtusis denticulatis marginatis basi brevi-calcaratis spatiis basi paucis 

 inanibus cseteris repletis, ramis cellulis corticalibus inanibus foliis 

 ovatis acuminatis apice truncatis denticulatis e serie triplici cellularum 

 marginatis spatiis latiusculis fibrillis repletis poris singulis binis tri- 

 nisve involucrantibus latissime ovalibus obtusis apice denticulatis 

 structura rameis conformibus, theca S. cymbifolii. 



Hab. New Zealand, Kerr and Knight. 

 Nearly allied to S. cymbifolium, and with some resemblance to S. con- 



tortum, but its branches not so curved, its leaves of a different form, 



all margined, spaces wider, and pores few in number. 



S. CONFERTUM {Mitten). Habitu S. compacti, ramuHs dense confertis 

 breviusculis, caule cortice e serie cellularum triplici formato serie ex- 

 terno fibris repleto, foliis oblongis apice rotundatis suberosulis spatiis 

 intercellularibus superioribus fibris repletis inferioribus inanibus mar- 

 gine nuUo, ramulis cortice cellulis inanibus foliis ovatis concavis 

 obtusis apice truncatis denticulatis margine serie unico cellularum 

 angustissimarum superne minutissime serrulato spatiis latiusculis fibris 

 spiris approximatis repletis, poris singulis. 



Hab. Tasmania; Western Mountains, rivulet behind Cumming's Head, 

 Mr. Archer. 

 Appearance and habit similar to S. subsecundum, but the cortical cells 



disposed in a triple series. 



S. MOLLicuLUM {Mitten). S. plumoso simile, caule cortice ex strato 

 unico cellularum efformato, foliis sub-elliptico-ovalibus basi brevissime 

 calcaratis apice rotundatis subtruncatis minute denticulatis spatiis 

 intercellularibus utplurimum repletis margine e serie triplici cellula- 

 rum angustissimarum composito, ramulis flaccidis cortice cellulis 

 inanibus foliis ovatis acuminatis marginibus superne incurvis apice 



