

89 



sub ore constricta horizontalis vel subnutans; operculum 



conicum ; calyptra glabra. 



Hepaticae. 



Plagiochia tahitensis J. A°M. Caulis repens ramis 

 procumbentibus simplicibus elongatis, folia distantia semi- 

 verticalia patentia divergenti-reclinata oblonga, margine ven- 

 trali e basi reflexa nuda anguste deeurrente subarcuatim 

 adscendente supra mediam spinoso-dentato, dorsali vix de- 

 eurrente anguste reffcxo subrecto integro vel supra medium 

 parce dentate, apic^ J rotundato plurispinoso - dentate, spica 

 mascula terminalis. 



Thysananthu, virens J, AM. Caulis repens parce 

 subpinnatus, folia im ricata madore patentia reflexa integer- 

 rim a ; lobo superiori blongo concavo, ramis procumbentibus 

 simplicibus elongatisl folia distantia semiverticalia patentia 

 divergenti - reclinata oblonga, margine ventrali recurvo, 



a involute subtruncato extus uniden- 



infero 

 tato, 



apicem vers 

 dente bamat 

 retusa, perianthia la" 



7 ampbigastria cuneato - subrotunda 



ralia apicaliave ovato-cordata, angulis 



lateral] bus deflexis ¥ >tuse subrepandis, carina angustissima. 



Phragmicoma pallida J. A°M. Caulis repens flexuosus 

 fragilis diehotomus, folia semiverticalia humida patentia 

 oblique ovata obtusa integerrima, margine ventrali reflexa, 

 lobulo ovato plica longitudinal i impressa notato, sub apice 

 obtuse unidentato, apice ipso truncate in folium transeunte, 

 amphigastria rotundo-transversalia, periantbium in ramis ter- 

 minale oblongum 9-plicatum. 



Habitat in Tahiti. 



Phragmicoma gibbosa J. A°M. Caulis repens sub- 

 dichotomus, folia imbricata semiverticalia, humida divergentia 

 e basi semicordata oblique ovato-oblonga acuta integerrima, 

 sinuato-complicata , lobulo ovato convolute apicem versus 

 unidentato, amphigastria quadrate- subrotunda emarginata 

 apiceque reflexa medis gibba, fructus in dichotomia sessilis, 

 perianthium obovatum obtusum apiculatum, dorso 3 ventre 

 4 costatum. 



LejeuniacoalitaJ. A°M. Caulis repens subpinnatus. 

 folia imbricata divaricata ovato-oblonga obtusa apice inflexo 

 obscureque denticulate complicata, lobulo truncate exciso, 

 amphigastria magna reniformi - cordata bifida, perianthium 

 obovatum in quatuor cornua divaricata longa exiens, folia 

 involucralia biloba seinvicem et cum amphigastrio involucrali 



obovato bifido dentate coalita. 



Frullania setulosaJ. A °M. Caulis repens inordinate 

 ramosus, ramis inordinate breviter pinnatis, folia obovato- 

 subrotunda concava arete imbricata integerrima; auriculae 



