188 FLORA OF TASMANIA. [Musci, by W. Wilson. 
Gen. XXXI. ORTHODONTIUM, Schwegr. 
Peristomium duplex, infra capsule orificium oriens ` externum, dentes 16, lanceolato-subulati, siccitate 
infra orificium seepe inflexi; ¿nternum, cilia 16, dentibus alternantibus, e basi brevi subcarinata dilatata 
filiformia. Capsula clavato-pyriformis, in pedicello tenui suberecta vel cernua, exannulata, symmetrica, 
leptoderma, laxe areolata. Opereulum breve, conico-rostellatum. Calyptra parvula, cuculliformis, fugax. 
—Musci graciles, cespitosi, habitu Dreis angustifoliis affines. Florescentia monoica ; fl. masc. yemmaformes, 
axillares, sepius aggregati. Folia longiuscula, lineari lanceolata, tenuia, laze areolata ; areolis subparal- 
lelogrammaticis, evanidinerviis. 
1. Orthodontium australe (Hook. fil. et Wils. Fl. Antarct. p. 106. t. 153. f. 5); caule ramoso 
fastigiato humili, foliis erecto-patentibus subrecurvis anguste linearibus subflexuosis nervo subcontinuo, 
capsula suberecta oblonga brevicolla, operculo rostellato. 
Has. On dead timber: Kangaroo Bottom. On dry trunks of trees: Mount Wellington, elev. 2000 
feet. Back River, Brown's River. (J. D. H.) (Oldfield, 134, 227, 225, 330.) On dead trees: West-end 
rivulet, Archer. 
Distris. Falkland Islands, Hermite Island. 
Gen. XXXII. LEPTOBRYUM, Br. et Schimp. 
Peristomium Bryi. Capsula in pedicello elongato tenaci flexuoso inclinata vel pendula, e collo longo 
angusto subito inflato-ovalis, leptoderma, vernicoso-nitida, luteo-rufa, sicca ore contracta, annulata. Oper- 
culum convexum, apiculatum. Calyptra perangusta. Flores hermaphroditi.—Plante simplices, ex infima 
basi innovantes. Folia media lanceolata, costata, summa in comam polyphyllam congesta, longissima, e basi 
. lanceolata longe et flexuose subulata, costa lata maximam partem lamine occupante excedente. 
l. Leptobryum pyriforme (Br. et Schimp. Bryol. Eur. t. 355).—Bryum pyriforme, Hedw. Hist. 
Muse. i. t. 9. f. 12. Webera pyriformis, Hedw. Muse. Frond. t. 3. 
Hap. Back River Gully, on rotten wood, with Ceratodon purpureus. (Oldfield, 312.) 
Disrris. Europe, Asia, America. 
Gen. XXXIII. BRACHYMENIUM, Hooker. 
Peristomium duplex; externum, dentes 16, lanceolato-lineares; ¿nternum, membrana plicata brevis, 
apice dilacerato in cilia sexdecim irregulariter fissa. Calyptra cuculliformis. Capsula clavato-pyriformis, 
egualis, annulata, suberecta. 
1. Brachymenium lanceolatum (Hook. fil. et Wils.) ; monoicum, caule breviusculo, innovationi- 
bus crassiusculis, foliis erecto-patentibus flaccidis siccitate subflexuosis lineari-lanceolatis acuminatis cari- 
natis integerrimis laxe pellucide areolatis nervo continuo, seta longa, capsula suberecta ovali-pyriformi 
brevicolla, operculo conico brevi. (Tas. CLXXIII. Fig. 8.) 
Has.? (Specimen scanty.) (Gunn.) 
Very like Acidodontium Kunthii, Hsch., but differing in the inflorescence.— Leaves twice as long, with larger 
areole, yellowish. Capsule shorter. Teeth of the peristome pale, gradually tapering, trabeculate externally. Inner 
peristome nearly as long as the outer. Annulus yellow, adhering to the mouth of the capsule. Male and female 
‚Flower contiguous. Seta red.—Prare CLXXIII. Fig. 8; 1 and 2, leaves ; 3, capsule; 4, peristome :—all mag- 
nified. 
