M 



FLORA OE NEW ZEALAND. 



[Mu 



Bridel, who first distinguished Dicnemon from Z«co<ta, considered it as pleurocarpous ; it is truly acro- 

 carpous. In the peristome, in the structure of the leaves, and in the form of the capsule, the affinity with Dioranum 

 is most intimate, and the principal difference consists in the branched creeping habit. In the mode of production 

 of the male flowers it is further closely connected with Dioranum through D. Sieberianum, twice figured by bchwag. 

 richen, once as Sclerodmtium pallidum (Leucodon, Hort. Muse. Exot., hjpnoides, Br.), and through Syrrhopodon 

 Taylori (Hort. Muse. Exot.), which probably belongs to the genus Dioranum, or at least to this group. ^ 



1. Dicnemon cah/dnum, Wils. et Hook.; caule repente, surculis erectis ramosis, ramis teretibus 

 acutis, foliis imbricatis ovato-lanceolatis concavis abruptinerviis, pcrichEetialibus vagmantibus, capsula 

 oblongo-cylindrica ourvula strumulosa, operculo e basi conica oblique subulate— Leucodon calycmus, 

 RooJc. Muse. Exot. 



Hab. Northern Island : Bay of Islands, common on limbs of trees, /. D. H. Port Nicholson, DyalL 



Auckland, Knight. 



Fructification often truly terminal, but in some cases the presence of innovations makes the fruit appear lateral. 

 -Calyptra large, inflated below prior to the swelling of the capsule, as in Funaria, roughish at the sumimt com- 

 pletely covering the fruit, half the length of the perichatium, from which it is but half exserted. Capsule oblique, 

 unequal (as in most Dicrana), tapering below into the pedicel. Male flowers nidulant amongst the leaves ot the 

 fertile stem, their organic origin uncertain, and their occurrence quite irregular, most frequent on stems ot advanced 



Gen. X. LEUCOBEYUM, Eampe. 



Peristomhmi simplex. Denies 16, lanceolato-subulati, bicmres, transverse articulati, intus trabeculati, 

 extus strigilosi. Capsula cernua, ovalis, gibba, collo strumoso, operculo longirostn, conacea, 8-stnata, 

 sicca sulcata.-Eolia spongiosa, e celMarum stratibus 2 pluribnsve conflata (celhdis quadrato-hemgmu 

 porosis), enervia, glauca vel albida. 



Separated by Hampe, and in ' Bryologia Europe,' from Dioranum, on account of the peculiar structure and 

 colour of the leaves. In all other respects the species seem referable to Dioranum. 



1. Leucobryum eandidum, Hampe; caule erecto ramoso fragili dichotomo, foliis dense imbricatis 

 erectis vel secundis subfalcatisve ovato-lanceolatis concavis dorso tuberculatis corrugatis, ramulis fructiieris 

 brevissimis axillaribus numerosis, capsula cernua strumosa sulcata.-Dicranum eandidum, Bridel, Br. Un. 

 Sclwagriclen, Suppl. #.187. Bryum candidum, Bitten. Muse. 



Hab. Throughout the Islands, on decayed wood and at the roots of trees; but seldom in fruit. 



Variable in ^.-Leaves more or less falcate, secund; in exposed dry situations shorter, straighter, more 

 spreading and subsquarrose [D. braolyplyllum, Hseh. ; Sprengel, Syst. v. 4. p. 322 ?], always tuberculated at the 

 back near the apex, the tubercles forming transverse, oblique wrinkles, whence the profile of the leaves is denti- 

 culate Fructification usually lateral in appearance, each stem bearing two or more contiguous fertile ramuli, easily 

 mistaken for periehaBtia. Such ramuli in an abortive state, bearing archegonia (pistilla), are copiously found on all 

 the stems -This Moss, according to SchwEegrichen, is monoicous, probably with nidulant male flowers, as in the 

 preceding We have as yet only found male flowers on separate (barren) stems in axillary clusters, as m Vcto- 

 blepharum. The capsules, etc., are scarcely different from those of Dioranum (Leucobryum) fflaucum. 



Gen. XL DICEANUM, Iledwig, etc. (in part.) 



Pemtomiwm simplex. Denies 16, basi conrluentes, sicci et humidi arcuato-conniventes, lanceolati, 

 ad medium et ultra in crura duo subulata huequalia divisi, intus plus minus trabeculati. Capsula plerumque 



