8-1. Eu-Floi'ide3e, Nemaliese, Helminthora. 



Species a geiiere removenda^ 



5. Helminthocladia Schrammii Ciouan in Maze et Schramm Alg. Gua- 

 del. p. 177, Murray Alg. West Ind. Region p. 11, teste J. Agardh 

 Till Algern. System. XT, p. 40 forsan genus propriuni inter Eu- 

 desinem et Liehmanniam iuserendum constituit. 



6. Helminthocladia Cassei Crouau in Maze et Schramra Alg. Guadel. 

 p. 177, Murray Alg. West Ind. Region p. 11 est, prseeunte claro 

 J. G. Agardh 1. c. p. 41, verisimillime Triohogloew species 



HELMINTHORA J. Ag. [1852] Sp. II, p. 416, Epicr. p. 508 (Etym. helmins, 

 helminthos, vermis), Ardiss. Phyc. Med. I, p. 264, Schmitz Syst. 

 Uebers. Florid. p. 4, Schmitz et Hauptti. in Engi. & Prantl Natiirl. 

 Pflanzenfam. 141, p. 333, Nemalionis, Dudresnaya^, Mesogloirr. 

 Ulvce sp. auct. [non Ilelminthora Fries (1825) Pl. homon. p. 341, 

 qua? cum Nemalione congruit]. — Frons teretiuscula, gelatinosa, 

 quoquoversum ramosa, axi filisque investientibus, stratum periphe- 

 ricum continuum formantibus, constituta; axis filis concretis pa- 

 rallelis lougitudiualibus articuhxtis, mediis crassioribus cellulaefor- 

 mibus constans; fila peripherica verticaliter a fasciculo axili exeun- 

 tia, dichotoma fastigiata, invicem libera. Cystocarpia inter strati pe- 

 ripherici fihxmenta evoluta, placentari adparatu proprio fere nullo, 

 fasciculo filorum praegnantium constituta; fila carposporifera a cen- 

 trali basi quoquoversum radiantia, peridermate communi nullo tec- 

 ta, brevissima, fasciculato-ramosa, articulata, intra articulos (supre- 

 mos demum inflatos) carposporas singulas rotundatas generantia. 

 Tetrasporangia hucusque ignota. Antheridia e cellulis minutissimis 

 ad apices filorum peripliericorum circumcirca evoUitis constituta. 

 Obs. A Dadresnaya lioc genus dilfert evolutionis norma; tubus 

 articulatus centralis haud adest; nec itaque fiki peripherica ab hoc 

 verticillatim egrediuntur. Cystocarpia aliter constructa sunt. A Ne- 

 malione longe diversa structura distat. Duas hoc genus amplecti- 

 tur species, unani frequentissime ad oras Europse et Americye, al- 

 teram ad oras Novie Hollandi» provenientum. 



1. Helminthora divaricata (Ag.) J. Ag. Sp. II, p. 416, Epicr. p. 507, Fk)- 149 

 rid. Morphok \). 189, t. 28, f. 6-11 (cystocarpia), Zanard. Icon. phyc. 

 adriat. I, p. 123, t. XXIX, Thur. Et. phyc. t. 32, Ardiss. Pliyc. Med. 

 I, p. 265, Buffham in Journ. Quek. Micr. Club 1888, p. 258, t. 20, 

 f. 1-2 (authcridia), Johnst. & Croall Brit. Sea, Weeds I, p. 181, t. 63! 



