Rangioideae, Rhodochsetaceae, Rhodochaete. 27 



Pflanzenfam. 141, p. 313 (Etym. erythros ruber et pelte scutimi), 

 Erythrotrichur sp. Berth. — Thallus horizontaliter expansus, te- 

 nuis, disciforniis, unistratosus, aliis algis pagina inferiori adfixus, 

 superne nonnunquam fiLa gregatim emittens ; crescentia marginalis 

 centrifuga. Monosporangia (asexualia) ut in genere Erythrotrichia 

 Aresch. Generatio sexualis hucusque ignota. 



1. Erythropeltis discigera (Berth.) Schmitz in Engl. et Prantl Na- 44 

 tiirl. Pflanzenfam. 141, p. 313, fig. 195, Erythrotrichia discigera 

 Berth. Bangiaceen (1883), p. 25, t. I, f. 15-18. — Cliaracteres generis. 

 Hab. in frondibus Cystoseirce ahrotanifoliai et in foliis Posido- 

 nim in sinu neapolitano (Berthold). 



Familia II. RHODOCHiETACEiE Schmitz. 



Rhodochcetacece Schmitz [1896] in Engl. & Prantl Naturl. Pllanzenfam. 141, 

 p. 317. 



Thaflus penicellatus, erectus, filiformis, ecorticatus, lateraliter ra- 

 mosus; rami articufis elongatis, ceUulis uninucleatis (?), chromatopho- 

 ra plura rubra (rhodophora) anguste fasci^eformia, plerumque ramosa, 

 parietafia praebentibus. Propagatio (asexualis) monosporis eciliatis et 

 membrana propria carentibus; intra ceflulas pecuHares (monosporan- 

 gia) ramorum (e quibus per porum lateralem effugiunt) efformatis. 



Obs. Genus unicum, monotypicum, epiphytice (semiparasitice) vi- 

 gens haec familia amplectitur. 



RHODOCH/ETE Thur. [1892] in Born. Alg. de Schousboe p. 260 (Etym. 

 rhodios roseus et chcete seta), Schm. in Engl. & Prantl Natiirl. 

 Pflanzenfam. 141 (1896), p. 318. — Characteres famiflae. 

 Obs. Species unica generis prcebet habitum Chantransice. 



1. Rhodochsete pulchelia Thur., Born. Alg. de Schousboe p. 261, t. 2, 45 

 f. 1-3, Schmitz in Engl. & Prantl Natiirl. Pflanzenfam. 141, p. 318, 

 f. 196. 



Hab. in frondibus Dudresnayce purpuriferce in mari Medi- 

 terraneo ad Antipolin Gaflise (Thuret, Bornet) et ad Neapofln 

 Itaflse (Schmitz). — Hujus speciei a claro Bornet nonnuflos ante 

 annos parvuflira specimen recepi, quod in herbario meo asservo. 



