NEW ZEALAND, TASMANIA, ETC. 89 



S. acicularis. (Hypnum, Brid.) 



Hab. Tasmania, Cheshunt, Mr. Archer. 



S. sciuroides. (Leskea, Hook. Muse. Exot.) 

 Hab. Tasmania, trees in creeks, Mr. Archer. 



To this group, of which S. acicularis is the type, belong S. densifolius 

 (Hypnum, Brid.), from Tristan d'Acunha and New Zealand, S. ptycho- 

 carpon (Hypnum, Schw.), S. ericoides, and S. Lyallii, Mitten (Leucodon 

 nitidus, Hook.Jil. et Wils. in Fl. New Zealand). All these agree in habit, 

 ramification, the red colour of their stems, and thin, pale, chaff-like 

 leaves and plicate capsules. S. ericoides and S. sciuroides in the Fl. of 

 New Zealand are joined with Neckera setosa, Hook. Muse. Exot., to form 

 the genus Cladomnion ; but the last-named species is in structure alto- 

 gether different, and is in fact a Spiridens. 



Achyrophyllum differs from Hylocomium, Schimp., in its ramification 

 not being pinnate, and its plicate capsules. From Plagiothecium it 

 differs in its leaves not being obliquely inserted and its erect stems. 



5. Sauloma, Kooh.fil. et Wils. 



S. tenella, eorund. 



Hab. Tasmania, on logs near Cheshunt, and on rocks, Jackey*s Plain 

 Creek, Mr. Archer. 



XII. Neckeeace^. 



1. Neckeea, Hedw. 



* Etmechera. 



N. hymenodonta, C. Miiller, Bot. Zeit. 1851, p. 564. 

 Hab. Tasmania, rivulets and damp copses, on trunks and branches of 

 trees, Mr. Archer. 



** Thamnium. 



N. rivalis {Mitten). Dioica, humilis, ramis arcuatis parce bipinnatis 

 apice ssepe productis stoloniferis, foliis distichis patentibus spathulatis 

 acutis nervo ultra medium evanido margine latere inferiore anguste 

 incurvo superne serrulatis ramulinis ellipticis magis serrulatis, cellulis 

 inferne elongatis superne ovoideis rotundatis parvis, perichsetialibus 

 e basi lata ovata brevissime nervata subulatis longe attenuatis, theca 

 in pedunculo elongato ovali horizontali, operculo subulato rostrato, 

 peristomio interno ciliis binis ap})endiculatis inter processus per- 

 foratos dentium longitudine in membrana ad f eorum longitudinis 

 exserta. 



Isothecium pumilum, Hook.Jil. et Wils. Fl. Tasm. t. 175. f. /. 



Hab. Tasmania, on stones, copse by West End Rivulet, on rocks by 

 rivulets and Stackhouse Falls, Mr. Archer. 

 Allied to Omalia oblongifolia, Hook. fii. et Wils., but larger, less 



densely branched, leaves acute, and peristome more developed. 



