BiCCia. FRAXZ STEPHANI. SPEGIES HEPATICARUM. 337 



sulco obtiiso, totam frondem percurrente, marginibus attenuatis, irregu- 

 lariter clentatis, squamarum marginibus papuloso-crenulatis vel subden- 

 tatis, sporis majoribus (9o ijl) laxius reticulatis. 



/ 64. R. corcovadensis St. n. sp. 



Monoica, major, fusco-viridis. Frons usque ad 15 mm. longa, vix duplo 

 latior quam crassa profunde bifurcala, furcis brevibus, late oblongis, 

 acutis, antice profunde acuteque stdcata, alis adscendentibus extrorsum 

 curvatis, marginibus acutis; costa sequilala, poslice rotundata, lateribus 

 alte adscendentibus. Squamae posticse purpureae, magnse, dense imbricatse, 

 integerrimse, frondis marginem haud superantes. Sporse magnae, 110 jji, 

 haud reticulatim-lamellata?, subloeves. 



Hab. Brasilia, Rio Janeiro in M. Corcovado (Guillerain, Ule). 



/ 65. R. australis St. n. sp. 



Dioica, major, pallide virens, expansa. Frons usque ad 10 mm. longa, 

 2 mm. lata, 1-2 furcata, furcis linearibus, apice angmtatis, divergentibus; 

 crassa, triplo latior quam alta, antice convexa, sulcata, sulco sub apice 

 acuto, haud profundo, versus basin frondis nullo; margines crassi, obtnsi, 

 costa leniter convexa in margines sensim attenuata; sectio transversa 

 frondis optime elliptica, medio sulco incisa. Squamae parvse, hyalinse vel 

 purpurascentes. Sporae magnse 102 {i, anguste alatse, reticulalim lamel- 

 latse, foveolis 14 jj., papillis altis. subspiniformibus. 



Hab. Montevideo (Fruchart). 



66. R. porosa Taylor. .1. of Bot. 1846, 416. 



Dioica? mediocris. Frons 8 mm. longa, repetito furcala, furcis parum 

 divergenlibus, ssepe conliguis, inferne longe coalitis, apice solum liberis, 

 linearibus, apice obtusis, crassis, plus duplo latioribus quam altis, antice 

 sulco tenui profundeque percursis, ceterum subplanis, marginibus obtusis; 

 costa postice subplana, strato supero frondis aeqnilata, lateribus abrupte 

 erectis; sectio frondis adultee itaque optime parallelogramma. Squamee 

 posticae, majusculee, hyalinaj vel purpurascenles, marginem vix attin- 

 gentes. Spor 72 |jl (haud perfecte maturee) anguste marginatae, minule 

 reticulatse foveolis sub 8 \i, ex angulis breviter papillatis. 



Hab. Aust7^alia, Swan River (Drummond). 



Die TayIor'schen Riccia-Namen, wie auch der obige, sollten zum Theil 

 eingezogen werden, da sie haufig in Folge volliger Yerkennung der 

 specifischen Merkmale gewahlt worden sind; die Beschreibungen sind 



29 



