Musci, by W. Wilson.) FLORA OF TASMANIA. 215 
b. Foliis muticis. 
34. Hypnum denticulatum (Linn. Sp. Pl. p. 1588); monoicum, caule prostrato parce ramoso, 
ramis latiuscule complanatis longiusculis subattenuatis, foliis laxe confertis e basi caviuscula asymmetrica 
late ovatis acuminulatis integerrimis margine inferne recurvis basi subbinerviis, capsula subcylindrica incli- 
nata, operculo conico acuto.—Hedw. Muse. Frond. t. 31. Stereodon Donianus, Mitten, in Journ. Linn. 
Soc. ined. 
Has. Johnny's Creek. (Oldfield, 140.) (Scanty and imperfect specimen, growing amongst Lepto- 
theca Gaudichaudii.) Cheshunt, Archer. 
Disrriz. Hermite Island, Cape Horn, Europe, North America. 
Tribe XXIV.  HuizocoNiACEX. 
Gen. LVI. RHIZOGONIUM, Bridel. 
Peristomium Hypni. Calyptra subulata, dimidiata. Capsula inclinata, longipedunculata. Opercudum 
plerumque rostratum.—Surculi subsimplices, erecti, subcompressi, cæspitosi. Fructus dasilaris. Flores- 
centia dioica. Folia rigida, serrata, vel integerrima. 
1. Rhizogonium distichum (Bridel, Bryol. Univ. ii. 665) ; dioicum, foliis distichis ovato-oblongis 
apice grosse dentatis nervo crasso sub apicem evanido, capsula oblonga horizontali, operculo conico-rostel- 
lato.—R. Muelleri, Hampe, in Plante Muellerania in Linnea ! (ex Mitten). Hypnum distichum, Schwagr. 
Suppl. t. 81. 
Haz. On rocks, Gunn. On stones: Leiith’s Creek, Cheshunt, Archer. Mount Wellington, Moss- 
man. 
Disrris. New Zealand. 
2. Rhizogonium Novz-Hollandie (Bridel, Bryol. Univ. ii. 664) ; dioicum, foliis distichis sub- 
marginatis oblongo-ovatis denticulatis nervo valido excurrente breviter cuspidatis, capsula oblonga horizon- 
tali, operculo rostrato.—Leskea Novee-Hollandie, Schwegr. Suppl. t. 83. 
Var. foliis secundis. (Gunn.) 
Haz. On rotten trunks of trees, and near springs: Mount Wellington. Back of Hobarton, on banks 
and dead wood. East Coast, on trap rocks. (Oldfield, 95.) (J. D. H., 1346.) On dead trees: Western 
Creek and West-end Rivulet, Cheshunt, Archer. Mount Wellington, Mossman. 
Drsrris. New Zealand, Australia, Lord Auckland's Islands. 
More elegant than the last.—Leaves yellowish-green, pellucid, scariose, obscurely margined below. Areole 
larger, guttulate. Capsule pale-red, purplish at the mouth. Seta reddish, 1 inch long. Operculum nearly as long 
as the capsule. Inner peristome with short cilia. Annulus large. 
3. Rhizogonium bifarium (Schimper, Bot. Zeit. 1844, p. 125); dioicum, surculo superne ramoso, 
foliis distichis distantibus patentibus ovato-lanceolatis concaviusculis submarginatis solidinerviis duplici 
serie spinuloso-serratis, capsula ovata horizontali, operculo conico-acuminato subrostellato.— Hypnum bifa- 
rium, Hook. Muse. Exot. t. 51. Isothecium bifarium, Bridel, Bryol. Univ. ii. 356. 
Haz. On stones, in wet places. Gullies: Brown’s River, Back River Gully. (Oldfield, 289, 326.) 
DisrarB. New Zealand. 
Surculi slender, 2 inch long, bearing fruit about midway, not at the base. Branches few, slender, curved to 
one side. Rachis zigzag. Leaves dull-green. Seta 2 inch, curved at the top. Capsule small, roundish. 
