Riccia. franz stephani. species hepatigarum. 323 



ginibus longe atlenuatis costam late superantibus; cosia postice plano- 

 convexa, sensim in alas attenuata; frondis sectio itaque sextuplo latior 

 quam alta, anlice plana, postice plano-convexa; slratum anlicum humilli- 

 mum (fere quadruplo minor quam costa in seclione). Squamee poslicee 

 breves, hyalinse, remotse. Sporse magnse, 119jj., late alals., ala tenuis varie 

 profundeque emarginata, sublobata, laxe reticulatim lamellatae, lamellis 

 altis, acutis; foveolae 17ji vel majores, valde irregulares, papillis nullis. 

 Hab. Amboina (Exped. Gazelle). 



^ 25. R. Treubiana St. n. sp. 



Monoica, major, palUde virens, margine purpurea. Frons 20 mm. 

 longa, tenuis, profunde furcata, furcis 5 mm. latis, apice truncato rotun- 

 datis, brevissime bilobis, antice suJiplana, sulco tenui percursa, alis vix 

 adscendentibus, planis, marginibus longius atlenuatis, acutis. Costa aequi- 

 lata, parum convexa, lateribus convexis oblique adscendentibus. Squamae 

 parvae hyalinse, marginem haud superantes. Sporae magnse 93[j. intense 

 rufse vel subpurpurese, laxe reticulatim lamellatcc, lamellis crassis, in 

 anguhs haud papillatis, foveolis sub 20 ^.; ala angusta erosa. 



Hab. Java. Buitenzorg (Treub). 



26. R. hortorum Bory Syn. Hep. p. 607. 



Dioica, major, virens, alis postice purpureis. Frons parum furcala, 

 furcis oblongis, crassis, 5-pIo tamen latioribus quam altis, antice sub apice 

 parum breviterque sulcatis, ceterum subplanis \q\ parum canaliculatis, 

 alis convexo-planis, leviter acuminatis margine acutis; costa duplo angus- 

 tiore quam stratum anticum, postice plano-convexa, sensim in alas atte- 

 nuata; frondis sectio transversa itaque fere symmetrice fusiformis, antice 

 tantum leniter emarginata. Squamse posticse parvse, purpurese. Sporse 

 magnee 102 [a, late alatse, ala irregulariter repando-vel inciso cristaeformi, 

 laxissime reticulatim-Iamellatte, lamellis angustis, altis, repandis, haud 

 papillatis; foveolis 17 [jl. 



Hab. : Insula Bourbon (Bory S* Vincent). 



27. R. angolensis St. n. sp. 



Dioica, 9 ignota, minor, glauco-virens. Frons 5-6 mm. longa, e basi 

 angusta obcordata vel obconico-oblonga, breviter furcata, furcis divergen- 

 tibus, breviter ligulatis, apice late rotundatis breviterque bilobis, ubique 

 fere plana, sub apice solum brevi rima instructa, postice parum incras- 

 sata; costa convexa in alas longe sensimque atlenuata, marginibus tenui- 



15 



