Riccia. franz stephani. species hepaticarum. 329 



luixlis valde irregularis, celerum subplana, margine acuta, sulco parum 

 profundo lateque aperto percursa, alis planis, solum sub apice frondis 

 leniler ascendentibus ibidenique margine late incurvo. SquaniEe magnse, 

 imbricatse, integerrimse, nigro-purpureae, frondis marginera longe supe- 

 rantes. Costa latissima, sat crassa, postice plano-coiivexa, lateribus bre- 

 vibus sensim excurrens. Seclio plantse transversa itaque quadruplo latior 

 quam alta, angulis late acuminatis. postice late lunata, antice angulo late 

 aperto incisa. Flores masculi femineis approximali. Spora? maximw, 

 150 {j,, crebre et regulariter lamellatse; anguli lamellarum papilia alta 

 truncata instructi, exosporium dein maxime hirtwn. 



Hab. Australia centralis. Arco eillinna well. Elder Explor. Exped. 

 (Helms), 



44. R. albomarginata Bisch. Syn. Hep. p. 604. 



Monoica, minor, viridis, ob squamas hyalinas prominentes quasi mar- 

 ginata, unde nomen. Frons usque ad 10 mm. longa, 2-3 mm. lala, fur- 

 cata, furcis obovato-hgulatis, obtusis. sub apice solum profunde canalicu- 

 latis, sulco angusto, lateribus alte curvatimque adscendentibus, in parte 

 adulta frondis sensim sensimque explanatis atquead planum demittenti- 

 bus, ceterum haud crassa, plus quadruplo latior quam alta; sectio trans- 

 versa dein valde variabilis, sub apice pagina antica late profundeque 

 incisa, postica hemisphserica, in medio frondis tamen antice vix emargi- 

 nala, postice plano-convexa ; marginibus ubique acutis, liaud altenualis. 

 Squamse posticse magnse, conferlae, oblique ligulat», rotundatfe, integer- 

 rimee, marginem frondis longe superantes. Sporse 76 [i.;, lamellis radiatim 

 dispositis, crebre anostomosantibus dense obtectce. 



Hab. Promont. bonae spei (Zeylier, Krauss). Plantam Krausseihaud vidi. 



45. R. inflexa Taylor. J. of Bot. 1846, p. 417. 



Dioica? minor, pallide-virens. Frons usque ad 5 mm. longa, simplex 

 vel breviter furcata, crassa sub quadrupio latior quam alla, furcis an- 

 gustis, linearibus, apice acuto, squamis atropurpureis obvelato, anlice 

 profunde canaliculata, canalis lateribus praerupte adscendentibus, in parte 

 adulta frondis magis apertis, marginibus breviter attenuatis acutissimis; 

 costa crassa, strato antico sequilata, postice plano-convexa, lateribus 

 rotundalis, sinuatira in margines excurrens. Squamse posticse atropur- 

 purese, magnse, imbricatse, durse fragilesque, marginera frondis supe- 

 rantes, Sporse « raagnse » teste Taylori ; railii ignotse. 



Hab. Australia, Swan River (Drummond). 



21 



