Musci, by W. Wilson.) FLORA OF TASMANIA. 207 
subcuspidatis, foliis erecto-patentibus confertis anguste lanceolatis sensim acuminatis superne grosse serratis 
nervo valido concolore excurrente (acumen haud omnino occupante) carinatis margine subincrassatis, setis 
aggregatis mediocribus tortis, capsula horizontali sulcata, operculo longirostri.— Trachyloma comosum, 
Mitten, in Journ. Linn. Soc. ined. 
Has. Woods on Mount Wellington. (J. D. H.) (Oldfield, 64, 103.) River Acheron, Gunn, 1593. 
Cheshunt, Archer. 
Distris. New Zealand and Lord Auckland's Islands. 
Leaves longer than in J. comosum, more crowded, with large serratures and areola, more distinctly striated 
when dry ; nerve less solid, not cylindrical, but keeled at the back. Branches longer, deflexed. Habit more ro- 
bust. Colour greenish, not fulvous. 
8. Isothecium Colensoi (Hook. fil. et Wils.) ; dioicum, laxe cespitosum, caule breviusculo tomen- 
toso apice lateraliter pinnatim comoso, ramis breviusculis decurvatis, foliis laxiuscule patentibus subsecundis 
rigidiusculis e basi cordato-lanceolata setaceo-acuminatis apice argute serratis nervo crassiusculo inferne 
dorso punctulata apice argute spinuloso excurrente, seta preelonga, capsula subpendula elongate cylindrica 
curvula octosulcata, operculo longirostri.—I. comosum, Hook. fil. et Wils. Fl. N. Zeal. 106, ex parte. 
(Tas. CLXXVI. Fig. 1.) 
Has. Tasmania. (Barren specimens only.) (Gunn.) 
DisrarB. New Zealand. 
Overlooked as a variety of I. comosum in the ‘ Flora of New Zealand,’ but on examination it appears to be quite 
distinct. It differs from both of the preceding species in the elongated capsule and seta, and from Hypnum comatum, 
C. Mueller, Syn. Musc. ii. 692, in the more strongly and sharply serrated apex of the leaf, which has the nerve 
constantly punctulate at the back, more solid at the excurrent apex, where it is cylindrical and spinulose.— 4reole 
of the leaf wider; alar cellules oval-oblong, numerous, not coloured. Colour of the foliage deeper green. Stem 
shorter than in Z. Sieberi. Branches few, scarcely $ inch long, not attenuated, more rigid, not whorled, but form- 
ing a lateral frond. Capsule (with the operculum) about } inch long. Teeth of the peristome pale yellow. 
* This appears to me to be the H. comatum, C. Mueller.” Mitten, in lit.—PrATE CLXXVI. Fig. 1; 1, leaf; 
2, capsule :—¿both magnified. 
Tribe XXIII. HrNACEX. 
Gen. LV. HYPNUM, Linn. 
Peristomium duplex ; externum, dentes 16, lanceolati, reflexiles, intus trabeculati, linea media notati ; 
infernum, membrana carinato-sulcata in processus 16 carinatos ciliis interpositis mediotenus fissa. Calyptra 
cuculliformis, glabra. Capsula inæqualis, arcuata, cernua, pleramque annulata, longe pedicellata.— Habitus 
varius. Caulis plerumque repens, vage vel pinnatim ramosus. 
$ 1. TAMARISCINA,— Caule pinnatim ramoso, stupa viridi e fibris ramosis composita villoso. 
1. Hypnum leviusculum (Mitten) ; “ dioicum, H. tamariscino simillimum, caule foliolis brevibus 
dense vestito, foliis ejusdem latitudinis subzequilateri triangularibus nervo crasso concolori in acumen 
angustum elongatum flexuosum excurrente, marginibus inferne recurvis integerrimis cellulis minutis sub- 
obscuris leeviusculis, rameis basi ovatis acuminatis obtusiusculis concavis ramulinisque ovato-oblongis com- 
pressis obtusis obscuris subintegerrimis minutissime papillosis subleevibus, perichsetialibus erectis pallidis 
ovato-lanceolatis in acumen elongatum flexuosum subserrulatum attenuatis, margine apicem versus partis 
latioris ciliato, theca in pedunculo elongato rubro eylindrica arcuata horizontalis peristomio normale.”— 
Leskea leeviuscula, Mitten, in Journ. Linn. Soc. ined. 
