Subgenus 1, AxuiciiüM. P. Beauv.—Ca/j/p/j-a anguste cuculiata, elongata, nuda, apice tantum spinulosa. Capsula
cylindrica. Operculum tenuirostre. Folia laiiceolaia-ligulata , nervo angusto, parce lamellosa, suhjlaccida.
1. Polytr ichum angustatum (Hook. Muse. Exot. t. 50) ; dioicum, gracile, foliis elongato-lnnceo-
latis erecto-patentibus auguste limbatis superne spinoso-serratis siccitate crispis, capsula suberecta tcnui-
cylinilracea, operculo teuuirostri, calyptra nuda.—Atrichum angustatum, B iy o l Eiwop. t. 4 d l. A. ligu-
latum. Mitten, in Keio Miscel. 1857, p. 262 ; idem in Joum. Linn. Soc. ined.
N&v. polgsetuni ; setis aggregatis.
IIab. Soutli Port Narrows, and Creek Town, etc. [Gunn, 25.) {Oldfield, 6 8 .)
^D is t r ib . Europe, North America, East India.
Subgeuus 2. Psilopiium, Bridel.— dentes 16-32, brevissimi. Capsula ovato-^entricosa-
Calyptra apiee pilosiuscula, infeme nuda.
2. Po ly tr ichum a u stra le (Hook. fil. et Wils. Fl. N. Zeal. p. 95. t. 87. f. 6) ; dioicum, caule brevi,
foliis confertis erecto-patentibus ovato-subulatis rigidulis canaliculatis integerrimis dense lamellatis siccitate
erectis incurvis, seta breviuscula, capsula inclinata ovata ventricosa microstoma, operculo rostellato, calyptra
brevi apice scabra.
H a b . Hobarton,/ . i). 2T. On stones and on the earth : rivulet behind Cumming’s Head, Western
Mountains, Archer.
D is t r ib . New Zealand, Hermite Island, Cape Horn.
3. Polytrichum (Psilopilum) crispulum (Hook. fil. et Wils.) ; dioicum, foliis laxe patentibus
subflaccidis siccitate crispulis incurvis lanceolato-oblongis acutiusculis denticulatis anguste lamellatis, seta
elongata, capsula inclinata ovata microstoma, operculo rostrato, peristomii dentibus 32 minutis angustis.—
Fl. N. Zeal. p . 95. t. 8 7 ./ . 3.
H a b . Western Mountains, jfírc/íír.
D is t r ib . New Zealand.
Subgenus 3. C t ph om a , Hook. fil. et Wils.— Capsula superne plana, inferne gibba. Calyptra subnuda.
Peristomii dentes 32-64. Folia argute serrata, basi vaginantia, rigida.
4. Polytr ichum Magellanicum (Hedw. Sp. Muse. t. 20) ; caule ramoso, foliis patentibus recurvis
rigidis e basi ovata vaginante subulatis serratis, capsula inclinata vel horizontal! oblonga semitereti, operculo
conico-rostrato, calyptra pilosiuscula.—27. Antarct. p p . 132, 411. /. 5 9 ./ . 3 ; Fl. N. Zeal. p . 95. Poly-
trichadelphus JIagellauicus, Miiten, in Joum. Linn. Soc. ined. Catharinea Polytrichadelphus innovans,
C. Mueller ; confi. Mitten, I. c.
Hab. Gully above the Wellington Falls, Mount Wellington. {Oldfield, 248, 295.) Cheshunt,
Archer. Mount Wellington, with P.juniperinum, Mosman.
D i s t r ib . New Zealand, Antarctic Islands, South America.
Subgenus 4. P o g o n a tu j i, P. Beauv., Brid., Br. et 8Ca.~Calyptra villosa. Capsula teres.
5. Polytr ichum (Pogonatum) alpinum (Linn.) ; foliis e basi vaginante longe et anguste lineali-
lanceolatis concavis margine argute serratis apice dorso spinulosis lamellis margine sensim incrassatis,
capsula erecta vel obliqua ovata et ovali-oblonga lævi collo perbrevi tumidulo instructa, operculo longius
rostello, calyptra villo fuscescente capsulam ex parte vel omnino obtegente, peristomii dentibus breviusculis,
subirregularibus.—Bryol. Europ. p . 9. {Mitlen, in lit.)
H a b . The Falls, and rivulet behind Cumming’s Head, Western Mountains, Archer.
D is t r ib . Australia, Europe, North America.
Subgenus 5. P o ly tk ic iiu m , Bridel.— Capsula angulata, apophysi discoidea instructa. Operculum brevius
rostratum. Calyptra villosa. Pciistomii dentes 64.
6 . Polytrichum commune (Liim. Sp. P I . ii. 1673) ; ca d e elongato, foliis e basi vaginante palenli-
recurvis lineari-lanceolatis longis serratis lamellis margine subbilWls obtectis, pericliætialibns membranaceis
erectis vaginantibns, capsda tetragona, opérenlo brevirostri.—A yof. fc -o p . t. 425.
Var. caule gracili breviore, foliis brevioribus erecB-patentibns confertis siccitate erectis.
Han. Dogs on hillsde. Brown's lliver. (e»»», 1691.) Olieshant, afreto-. Var./9.
Bogs neai- the lluon. {Oldfield, 297.)
D is t r ib . Common iu all parts of the world.
7. Polytr ichum juniperinum (Hedw. Sp. Muse. t. 18) ; foliis patentibus subrecurvis e basi vagi-
nante lineari-lanceolatis margiue membranaceo inflexis integerrimis brevi-aristatis, capsula quadrangular!
siccitate horizontali, operculo rostellato.— Bryol. Europ. t. 423.
H a b . O u the ground; summit of Mount Wellington. Falls, New Norfolk. {Gunn, 5.) {Lyall,
103.) { J .D .H ) Elliott Rivulet, rfrc/?i?ry gathered also by
D is t r ib . Europe, Asia, North America.
Gen. LX. DAWSONIA, Brown.
Peristomium peniciDatum, ciliis numerosissimis, capillaribus, erectis, æqualibus, inarticulatis, capsulæ
ore et columellæ apice impositis. Calyptra subulata, latere fissa, indumento e villis intertextis vestita.
Capsula liinc plana, inde couvexa. Operculum subulatum.—Habitus, folia, florescentia, etc., omnino
Polytrichi.
1. Dawson ia superba (Greville, in Ann. Nat. Hist. 1847, p. 226. t. 1 2); 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. It. Br.”
Gunn, in sched.
Hab. Emu Bay. (Ga««, 1590.) Cheshunt,
D is t r ib . New Zealand.
Section'2. P l e u r o c a r p i.
Ti'ibe X V III. L e u c o d o n t eæ .
Gen. XLYI. LEUCODON, Bridel.
Peristomium simplex; dentes 16, basi connati, perforati, bipartiti vel bifidi. Calyptra cuculliformis.
Capsula erecta, æqualis, exannulata. Florescentia dioica.—Folia dense imbricata, plerumque enervia, pii-
cato-striata vel loevia, anguste areolata.
1. Leucodon Lagurus (Hook. Muse. Exot. t. 126); caule ramoso tomentoso, foliis imbricatis
oblongo-ovatis concavis piliformi-acuminatis estriatis subenerviis, capsula erecta subcylindrica, operculo
oblique 'ccoAvAo.— Schwoegr. Suppl. t. 133. Stereodon Lagurus, Mitten, in Joum. Linn. Soc. ined.
H a b . On dry rocks, at an altitude of 1060 feet, uear the top of Mount Wellington, on the south
side. { J .D .H .) {Oldfield, IIQ.) Cheshunt, rfrc/z«-.
D is t r ib . Campbell’s Island, Hermite Island, Straits of Magellan.
Leaves veiy glossy, bright green, nerveless or two-nerved at the base, variable, sometimes single-nerved half-
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