Myxopliycese, Glaucophycese, Goniotriohum. 687 



nusve regulariter secedentes; cellulai chromatophoro centrali stel- 

 lato, pyrenoide centrali et nucleo excentrico unico ornatis, mem- 

 brana stratim in mucum gelineum diffluens, stratum crassum, ge- 

 lineum cellulis circumfundentem fingens. Propagatio cellulis im- 

 motis, lusu tegumenti, egredientibus; propagatio sexuata plane 

 ignota. 



Obs. Species marinse, Bangiaceis, characteribus permultis, refe- 

 rendae. 



1. Goniotrichum elegans (Chauv.) Zanard. Not. cell. ven. pag. 69, 1B49 

 Ic. Phyc. Adr. III, p. 67, tab. XLVI .1, Le Jol. Liste des Alg. 

 Mar. de Cherb. p. 103, f. 3-4, J. Ag. Till Alg. Syst. VI, pag. 13, 

 Hauck Meeresalg. p. 518, Goniotrichum dichotomum Kiitz. Phyc. 

 germ. p. 193, Sp. Alg. pag. 358, Tab, Phyc. III, p. 27, nec Berth. 

 Bangia eiegans CjhQ,uv. Alg. de Norm. n. 159! Harv. Phyc. Brit. 

 Tab. 246 ! Zanard. Not. sulle cell. etc. p. 67, G. ceramicola [3 ra- 

 mosum Kuetz. Sp. Alg. pag. 358 (excl. synon. ), G. elegans 

 var. Alsidii Zanard., Bangia Alsidii Zanard. in Bibl. it. tom. 96 

 (1839), p. 135, Syn. Alg. Adriat. (1841), p. 217, t. VI, f. 7, Ban- 

 gia Zanardini Menegh. msc. — Filamentis singulis vel in floc- 

 culos roseo-rubros consociatis, 0,3-6 mm. longis ad 20 (j.. diam., 

 plerumque basim incrassatis, sursum attenuatis, raro simplicibus, 

 saipius pseudodichotomice ramosis; cellulis uni vel pluriseriatis, 

 sphsericis vel ellipsoideis, 7-10 [x. diam. violaceo-rufis, in viridem 

 vergentibus. 



Hab. in algis et Zosteris in mari septentrionali (Kuetzing, 

 Harvey), ad oras Atlanticas (Chauvin, Le Jolis) et Adriaticas (Za- 

 NARDiNi, Haugk); ad Tingin Afric» (Bornet), ad Plocamium pa- 

 tens insulae Timor (Von Martens). — Obs. Pra^eunte cl. Hauck 

 (Bemerk. ueb. einige Sp. der Rhodophyceen in Oesterr. bot. Zeitschr. 

 1876, p. 414), species nonnullaa Callonematis a cl. Reinsch in Con- 

 trib. ad x\IgoI. et Fungolog. descriptae hoc in loco ut varietates G. 

 elegantis, rejiciendse videntur: idest: — Var. subtile (Reinsch), 

 Contrib. pag. 43, t. XX a: filamentis solitariis, 1-1,5 mm. longis, 

 ramosis; cellulis subquadraticis vel diam. paulo longioribus, 5,6 « 

 2,8 {1. dissepimentis 50 [j.. et ultra crassis separatis; tegumentis 

 crassis. — In Giraudia et Cladophoris ins. EIba3 m. Mediter- 

 ranei (Reinsch). — Var. aerugineum (Reinsch) Contrib. p. 42, t. XIX, 

 fig. 1 a: filamentis solitariis, 13 (x. crassis fere y, mm. longis; 

 cellulis rectangularibus usque subquadratis, 56 ^ 84 jt., dissepimentis 



