Musei, by W. Wilson.) FLORA OF TASMANIA. 201 
Subgenus 5. POLYTRICHUM, Bridel.—Capsula angulata, apophysi discoidea instructa. Operculum brevius 
rostratum. Calyptra villosa, Peristomii dentes 64. Columella alata. 
6. Polytrichum commune (Linn. Sp. Pl. ii. 1573); caule elongato, foliis e basi vaginante patenti- 
recurvis lineari-lanceolatis longis serratis lamellis margine subbifidis obtectis, pericheetialibus membranaceis 
erectis vaginantibus, capsula tetragona, operculo brevirostri.—.Bryol. Europ. t. 425. 
Var. 8; caule gracili breviore, foliis brevioribus erecto-patentibus confertis siccitate erectis. 
- Has. Bogs on hillside, Brown's River. (Gunn, 1591.) (Oldfield, 327.) Cheshunt, Archer, Var. B. 
Bogs near the Huon. (Oldfield, 297.) 
DisrRIB. Common in all parts of the world. 
7. Polytrichum juniperinum (Hedw. Sp. Muse. t. 18); foliis patentibus subrecurvis e basi vagi- 
nante lineari-lanceolatis margine membranaceo inflexis integerrimis brevi-aristatis, capsula quadrangulari 
siccitate horizontali, operculo rostellato.—.Bryol. Europ. t. 429. 
Has. On the ground: summit of Mount Wellington. Falls, New Norfolk. (Gunn, 5.) (Lyall, 
103.) (J.D.H.) Elliott Rivulet, Archer ; gathered also by Mossman. | 
DrsrRiB. Europe, Asia, North America. 
Gen. LX. DAWSONIA, Brown. 
Peristomium penicillatum, ciliis numerosissimis, capillaribus, erectis, eequalibus, inarticulatis, capsule 
ore et columelle apice impositis. Calyptra subulata, latere fissa, indumento e villis intertextis vestita. 
Capsula hinc plana, inde convexa. Operculum subulatum.—Habitus, folia, florescentia, etc., omnino 
Polytrichi. 
1. Dawsonia superba (Greville, in Ann. Nat. Hist. 1847, p. 226. t. 12); caule elongato, foliis e 
basi ovato-subrotunda amplexicauli linearibus longissimis rigidis spinoso-serratis erecto-patentibus, seta 
brevi crassa, capsula foliis exserta, calyptra parva pallidiore pilis brevibus vestita.—“ D. longifolia, R. Br.” 
Gunn, in sched. 
Has. Emu Bay. (Gunn, 1590.) Cheshunt, Archer. 
Distris. New Zealand. 
Section 2. PLEUROCARPI. 
Tribe XVIII. LEUCODONTEE. 
Gen. XLVI. LEUCODON, Bridel. 
Peristomium simplex; dentes 16, bast connati, perforati, bipartiti vel bifidi. Calyptra cuculliformis. 
Capsula erecta, equalis, exannulata. Florescentia dioica.—Folia dense imbricata, plerumque enervia, pli- 
cato-striata vel lavia, anguste areolata. 
1. Leucodon Lagurus (Hook. Musc. Exot. t. 126); caule ramoso tomentoso, foliis imbricatis 
oblongo-ovatis concavis piliformi-acuminatis estriatis subenerviis, aprila erecta subeylindrica, operculo 
oblique rostrato.—Schwagr. Suppl. t. 199. Stereodon Lagurus, Mitten, in Journ. Linn. Soc. ined. 
Haz. On dry rocks, at an altitude of 1000 feet, near the top of Mount Wellington, on the south 
side. (J. D. H.) (Oldfield, 116.) Cheshunt, Archer. 
Disrrız. Campbell's Island, Hermite Island, Straits of Magellan. 
wo-nerved at the base, variable, sometimes single-nerved half- 
Leaves very glossy, bright green, nerveless or t E 
VOL, II. 
