25'} Eii-Floridca3, Tylocarpese, Gyranogoiigrus. 



pressa et denique plana (saepius fere canaliculata, marginibus in pa- 

 gina fructifera prominentibus), linearis, inferne 1,2 mm., superne 

 3-4 mm. lata, 3-3 cm. a radice distantia divisa et dein paucis 

 dichotomiis fere seque distantibus decomposita. Segmenta terminalia 

 dilatata rotundato-obtusa. Axilla3 omnes acutiuscul». Pseudo-nema- 

 thecia (ab AcUnococci sp. formata) subsphgerice prominentia et fere 

 omnino emersa, diametro fere 2 millim., in segmentis superioribus 

 plura adproxiraata et in eadem pagina fere omnia obvenientia. 

 Substantia coriarca. Color atro-purpureus. 



24. Gymnogongrus dilatatus (Turn.) J. Ag.Sp. II, p. 326, Epicr. p. 214, 5u) 

 Fticus dilatatus Turn. Hist. Fuc. Tab. 219, Sphcurococcus dila- 

 tatus Ag. Sp. I, p. 250, Syst. p. 216, Oncotylas dilatatus Kuetz. 

 Sp. p. 789, Tab. Phyc. XIX, t, 62, Cliondrus atro-purpurem Suiir 

 Beitr. 1840, p. 264, Chondrus dilatatus Grev. Syn. p. LVI. — Fronde 

 cgespitosa. subcanaliculato-plana, dichotomo-fastigiata, segaientis 

 subcuneato-Iinearibus margine subincrassato integerriniis, teraiina- 

 libus truncato-obtusis subinvolutis; pseudo-neraatheciis heraisphffi- 

 ricis ad unam paginam (fero tantum) obvenientibus, dcmuui pUi- 

 rirais approxiraatis. 



Hab. in raari Australi ad Caput Bonne Spei Africte (Lalande, 

 Harvey, Pappe). — Frons 7-10 cm. longa, inferne teretiuscula, 

 raox plana et divisa, decornposito-dichotoma, coriacea et crassa, 

 segmentis sublinearibus infra dichotoraias 12-14 niillira. circiter 

 distantes leviter cuneatim dilatatis, cseterura late lin^aris, apicibus 

 truncato-obtusis aut eraarginatis, axillis snepius rotundatis; mar- 

 gines integerrimi et levissime incrassati, quod ad apices subinvo- 

 lutos prsecipue conspiciatur. Pseudo-neraathecia (ab Actinococco la- 

 tiore efforniata) hemisphgerica, arabitu lentis aut niajora, al unani 

 paginam, hinc convexara marginibus revolutis, limitita, uno alte- 

 rove ad paginam aversam conspiciendis, demura it.i dense prove- 

 nientia ut pluribus confluentibus irregularia evadant atque agglonie- 

 rata. Color a sanguineo intense purpurascens aut imino in fuscnra 

 tendens. Substantia fere coriacea. 



Subgen. V. Dictyogenia J. Ag. Epicr. p. 207: froiide cariiosa. cellnlis strati 

 interioris stelJatiin radiantibus, nompe longius invicem <Iistaiitibus, railiis 

 angustioribus junctis. 



25. Gymnogongrus torulosus (Hook. et Harv.)Schmitz \n^cx., Alinfel- m 

 tia torulosa (Hook. et Harv.j .1. Ag. Ejiicr. p. 207. (iigartina to- 

 rulosa Hook. et Harv. in Lond. .lourn. Bot. IV, p. 51(;, Gracitai-ia^ 



