Li 
178 FLORA OF TASMANIA. [ Musci, by W. Wilson. 
Gen. XVII. DIDYMODON, Jr. et Schimp. 
Peristomium breve, simplex; dentes 16, lineari-lanceolati, secus lineam mediam integri vel pertusi et 
bifidi, tenerrimi, fugacissimi. Capsula, etc., ut in Trichostomo. : 
1. Didymodon papillatus (Hook. fil. et Wils. Fl. N. Zeal. p. 73. t. 85. f. 2); laxe cespitosus, 
caule elongato rigidulo subramoso, ramis filiformibus erectis, foliis trifariis patenti-recurvis ovato-lanceolatis 
acuminulatis carinatis subsolidinerviis integerrimis utrinque papillatis, perichzetialibus convolutis, capsula 
oblonga erecta, operculo conico-subulato. 
Haz. On the ground: New Country, J. D. H. ; Hobarton, Oldfield ; the Hummocks, Archer. 
Disrris. New Zealand, Swan River, Australia. 
Gen. XVIII. CERATODON, Bridel. 
Peristomium simplex; dentes 16, lanceolati, ad basin fere bicrures, cruribus eegualibus subulatis, basi 
dense superne remote articulati, articulationibus prominulis, humiditate conniventes, siccitate spiraliter 
incurvi. Capsula suberecta, oblonga, collo brevi, striata, sicca angulosa, pachyderma. Annulus duplex, 
revolubilis.  Opercu/um conico-rostratum. Calyptra cucullata.—Florescentia dioica. Habitus inter Di- 
cranoideum et Trichostomoideum ludens. 
1. Ceratodon purpureus (Bridel, Br. Univ. i. 480) ; caule dichotome ramoso, foliis oblongo-lan- 
ceolatis carinatis margine reflexis dorso papillatis patentibus siccitate subtortilibus nervo valido subexcur- 
rente, pericheetialibus vaginantibus acuminatis, capsula in pedicello purpureo suberecta oblonga subincurva 
striata strumulosa siccitate cernua subhorizontali, operculo conico, peristomii dentibus in membrana basilari 
sat producta bifidis margine pallidioribus.—Br. e£ Sch. Bryol. Eur. t. 189. Dicranum purpureum, Hedw. 
Sp. Muse. t. 36. 
Var. 2; foliis suberectis confertis siccitate strictioribus, nervo crassiore, seta elongata. 
Has. Moist burnt ground: St. Patrick's River. (Gunn, 1616.) (Oldfield, 312, 332, 199.) Back 
River Gully, above Wellington Falls. (Oldfield, 310.) New Norfolk, J. D. H. On rocks and stones: 
Western Mountains, Archer. Var. 2. On cow-dung, in bogs: North-west Bay, Oldfield. 
Disrris. All parts of the world. 
2. Ceratodon stenocarpus (Br. et Schimp. in Monogr. Ceratodon. p. 4, memoratus) ; dioicus, 
habitus C. purpurei, capsula in pedunculo flavido plus minus cylindrica cernua angulata evidentius stru- 
mosa, peristomii dentibus brevioribus angustioribus fuscis subunicoloribus ad basin usque fere fissis. 
Has. On the ground; frequent in the bush. (Oldfield, 70.) 
Disrris. South Africa, Nilgherry Mountains, Mexico, Columbia. 
Tribe VII. HEpnwrGIACEA. 
Gen. XIX. HEDWIGIA, Zara. 
Peristomium nullum. Capsula globosa, immersa vel longius pedicellata, brevicolla, exannulata. 
Operculum subconicum vel conico-rostratum. Calyptra minuta, conica vel cucullata. Flores monoici vel 
'dioici, masculi gemmeeformes, axillares.— Folia enervia, concava. 
$1. EURYSTOMUM.— Rhizoma repens, subterraneum. Folia laze reticulata. Spore pregrandes. 
l. Hedwigia repens (Hook. Musc. Exot. t. 106) ; rhizomate repente subterraneo, (foliis surculi 
