StG Eu-Florideae, Solierie.i', Arescliougia. 



iiTegulariter dichotonia, segmentis lequalibus, tlexuoso-erectis, apice 

 ol)tuse rotundatis, papillis crassis mammosis undique erumpentibus. 

 Hah. ad insulam «Aru-Vokan» (Beccari). — Color frondis la- 

 teritius, 



ARESCHOUGIA Harv. [1854] in Traus. Irish Acad. Vol. XXIL p.'554, 

 (Etym. a claro phycologo suecico J. E. Areschoug), J. Ag. Epicr. 

 p. 280, Schmitz et Hauptfl. in Engl. & Prantl Natiirl. Pflnnzenfam. 

 142 (1896), p. 378, Thamnocarpi, Fiici, Carpothamnii sp. auct. 

 nonnull., non Areschougia Menegh. [1844] nec Trevis. [1848]. — 

 Frons tubulosa, teretiuscula aut anceps, continua, deorsum nunc 

 caulescens et solida, ramis ramulisve tubulosis, tubo filis articula- 

 tis ramosis et anastomosantibus, ab axili siphone crassiore egre- 

 dientibus, percurso, peripherico strato cellulis interioribus rotunda- 

 to-angulatis exterioribusque minoribus, nunc in fila verticalia evo- 

 lutis, constituto. Cystocarpia intra periphericum stratum plus 

 minus prominens suspensa, carpostomio demum aperta, nucleum 

 compositum, strato circumnucleari cinctum , foventia; nucleoli circa 

 axilem tubum placentarem radiatim dispositi, columnis filorum 

 sterilium a placenta ad stratum circumnucleare extensis sejuncti, 

 filis carposporiferis inferne subdichotomis articulatis, superne cla- 

 vatis constituti; carposporce in articulis superioribus incrassatis 

 subdivisione articuli orta^ plures vage conglobatae, rotundato-an- 

 gulatoe. Tetrasporangia strato corticali immersa, sparsa, oblonga, 

 zonatim divisa. 



I. Fronde teretiusculti, quorjuoversum rumosa, cystoc.irpiis in fronde circum- 

 circa nodoso-inturaescente immersis. 



1. Areschougia congesta (Turn.?) J. Ag. Bidr. Florid. Syst. p. 2G, 714 

 Epicr. p. 281, Facus congestiis Turn. Hist. t. 1791, Areschougia 

 gracilarioides Harv. Phyc. austral. Syn. n. 528 ?, — Fronde caule- 

 scente, sursum sensim tenuiore, teretiuscula, quoquoversum ramosa, 

 superne subcorymbosa, inferne ramulis minoribus subseriatis obsita, 

 ramis majoribus erecto-patentibus basi vix attenuatis, ramulis pa- 

 tentioribus, ultimis demum leviter utrinque attenuatis. 



Hah. ad oras australes Novse HoIIandiae (Mueller). 



2. Areschougia Laurencia (Hook. et Harv.) Harv. FI. Tasman. p. 321, 715 

 J. Ag. Epicr. p. 282, Thamnocarpus? Laurencia Hook, et H. in 

 Loud. Journ. Bot, VI, p. 409, Carpothamnion Laurencia Kuetz. 

 Tab. Phyc. XVIII, t. 14. — Fronde fere tota ajqnaliter filiformi. 



