Musci.~] 



FLORA OF NEW ZEALAND. 



99 



Tribe XIV. Leucodonteje. 

 Gen. XLY. LEUCODON, Bridel. 

 Peristomium simplex. Denies 16, basi connati, perforati, bipartiti v. bifidi. Calyptra cuculliformis. 

 Capsula erecta, sequalis, exannulata. Floresceniia dioica. — Caulis repens, radiciformis ; rami teretes, erecii 

 sciuroidei. Folia dense imbricata, enervia, in plerisque plicato-striata, sublinearia, areolata. 



1. Leucodon nitidus, Hook. fil. et Wils. ; caule vage ramoso, procumbente, ramis obtusiusculis, 

 foliis laxe imbricatis ovali-oblongis obtusis concavis integerrimis enerviis estriatis margine subrecurvis, 

 periehsetialibus longioribus convolutis, seta brevi, capsula erecta oblonga siccitate sulcata, operculo longi- 

 rostri, peristomii dentibus bifidis. (Tab. LXXXVII. Fig. 4.) 



Hab. Northern Island : Bay of Islands, on bark of trees, rare, /. D. H. 



Of this pretty species just enough has been gathered to supply the materials for description. — Stem about 1 

 inch long. Leaves erecto-patent, pale shining green, areola? narrow. Seta 3 lines long, red. Annulus 0. Opercu- 

 lum shorter than the capsule. Peristome red, bi-trifid halfway down, trabeculate externally. Male flower absent. — 

 Allied to Pterogonium urceolatmn, but differs in the obtuse, very concave leaves, and dioicous inflorescence. P. obtu- 

 sifolium, Torrey, has mucronate leaves (sec. descr.). In habit a Pterogonium, having little in common with Leucodon 

 sciuroides, and if ever genetically separated we propose the name of Dichelodontium. Sclerodontium of Schwsegrichen, 

 first employed for Leucodon pallidus (which is a Bicnemon, Bridel, and not pleurocarpous), has been ill associated 

 with S. pellucidum, Schwasgrichen, which will form a second species of our Dichelodontium. — Plate LXXXVII. 

 Fig. 4: — 1, plant, natural size; 3, capsule; 3, operculum; 4, calyptra; 5, part of peristome; 6, leaf: — all mag- 

 nified. 



Gen. XL VI. LEPTODON, Mohr. 



Peristomium simplex. Denies 16, brevissimi, tenuissimi, lineari-lanceolati. Calyptra cuculliformis, 

 inferne pilis longissimis hirta. Calyptra sequalis, exannulata. — Caulis repens ; surculi pinnati, ramosissimi, 

 elaslici, ramulis siccitate involutis. 



1. Leptodon SmitMi, Micheli; dioicus, caule repente, surculis bipinnatis, foliis ovato-subrotundis 

 obtusis evanidinerviis, capsula brevi pedicellata suberecta oblongo-ovali, operculo rostrato. 



Hab. Middle Island : male plant only, mixed with other Mosses, on bark of trees, Lyatt. (A native 

 of England.) 



Found also in all Europe and the Cape of Good Hope. 



Gen. XL VII. CLADQMNION, Hook. fil. et Wils. 



Peristomium duplex: exterius, dentes 16, lanceolati; interius, membrana in processus 16 carinatos 

 profunde divisa. Capsula erecta, sequalis, brevipedicellata. Calyptra cucullata, magna ; operculum rostra- 

 tum. — Caulis repens; surculi erecti, elongati, suisimplices. Habitus Leucodontis. 



We separate the following from Leslcea and Neckera on account of the habit of growth, and the strong resem- 

 blance of the fruit to that of Leucodon. 



§ 1. Capsula sulcata; folia enervia. 



1. Cladomnion ericoides, Hook. ; surculis elongatis erectis subsimplicibus, foliis imbricatis subovatis 

 apice recurvis plicato-striatis enerviis, capsula erecta oblonga sulcata, operculo longirostri. — Leskea, 

 HooJs. Muse. Exot. t. 140. (Leskea ericoides, Auct.) 



Hab. Northern and Middle Islands : Dusky Bay, Port Nicholson, Wellington, Chalky Bay, Milford 

 Sound, Menzies, etc. 



