413 



Ost- und Nordsee.' — Auch von den Herren Frölich , Binder, Mertess und Jürgens 

 erhalten, 



2) Phyllophora nervosa. 



Grkv. 1. c. 



Mittelineer .' 



Acanthotylus. 



Phycoma siirsum planiiQi, ramosum. Structura Phyllophorae. Sirothelia in 

 disco sessilia, spinosa, spinis initio terminalibus^ reflexis, adpressis, deinceps patentibus, 



Acanthotylus Ueredia. 

 Sphaerococcus Heredia Ag. 

 Mittelmeer: Bertoloni! Fruchtexeniplar von Algier: Bory de St. Vincent I 



Tribus IV. Choristocarpeae. 



Ordo Axonoblasteae ; phycoma filiformes, ramellis fnictiferis articulatis eonl'ervaceis 

 vestitum. Structiira perigeneta. Cystocarpia lateralia , distinctissima, carpo- 

 stomio distincto pertusa , spermatia eloiigata , p jriformia , fasciculata , basi in 

 petiolum attenuata foveiitia; (^spcrmopodlum nulluni), Tefrachocarpia in carpo- 

 cloniis distinctis, vel ramellis imposita, Spermatoidia distinctissima. (Parasper- 

 mata niilla.) 



Ordo Coeloölasteae ; phycoma plerumque filiforme, tubulosum, raro saccatiim. Stru- 

 ctura parencliymatica. Cystocarpia lateralia. Spermatia subrotunda, spermo- 

 podio dendroideo primuni affixa. Tetrachocarpia nnnc in carpocloniis plus 

 minusve distinctis, ramiformibiis , nunc phycoinati immersis. Paraspermata inter 

 spermatia nidulantia, conglomerata, (Spermatoidia niilla.) 



Ordo Platynoblasteae ^ phycoma foliaceum, stipitatum, parencliymaticum. Cystocarpia 

 exserta, distincta, spermatia rotunda foventes, spermopodio affixa. Tetracho- 

 carpia nunc in phyllomate , nunc in carpocloniis distinctis , saepc foliaceis, 

 (Spermatoidia distincta vel paraspermata in racemos congesta.) 



Ordo IV. AXONOBLASTE AE. 



Fam, Dasyeae^ algae filiformes^ gelatinosae, lubricae, liirsutae; phycomate primario 



corticato , filamentis articulatis tenerrimis vestito. Carpoclonia distinctissima, 



articulata, tetrachocarpia verticillatim disposita foventes. 

 F^am. Polysiphonieae; algae articulatae , filiformes. Rami articulati , polysiphonei, 



apice filamentis articulatis penicillatis elongatis ornati. Carpoclonia ramiformia, 



articulata. 

 Fam. Chondrieae'y algae cartilagineae , continuae , filiformes (raro complanatae ). 



