— 933 — 



matic. teres aut subglobosns, cellulis quamnd. discoideo-or- 

 dinatis. Ovula *(an utriculi?) et antheridia? lateralia v. e pa- 

 ranematibus ihallum parenchymatic. circumdanlibus. 



a. E ct o c a r p e ce: thallus confervinus ramosus, ovulis 

 et antherid. lalerahbus (paranemata goniophora quasi sola, 

 thallo ad fulcrum reducto): — Elachista, Ectocarpus. 



b. Sp hac elar ic ce\ ihallus polysiphonius, distiche v. 

 verlicillato-ramosus, cellulis plerumque discoideo-ordinalis et 

 terminalib. in sphacelas abeuntibus, epi-meso-et endothallium 



H distincta; ovula et antheridia lateralia v. O: — Bal- 



Ka^ Sphacelaria^ Haloj)teris^ Stypocaulon, Claclostephus. 



c. Chordariece: ihallus subglobosus-minutus v. fda- 

 ris, gelatinosus, paranematibus ovuliferis v. anlheridiophoris 

 obsitus. — Corjnophlcea, Leathesia^ Myriocladia.) Thorea^ Me- 

 sogloea^ Chordaria^ Chidosiphon, 



d. Chordece: thallus fistulosus, coriaccus, paranemati- 

 bus ovuliferis undique obsitus: — Chorda, Spermatochnus^ 

 Halorhiza. 



FAM. 16. DICTYOTlNiE. 



Algoe marinae graciliores. Thallus olivaceus, laminaris, li- 

 neari-dichotomus, saccatus v. fislulosus, cellulis saepe cubi- 

 cis et intimis majoribus, radice stuposa. Ovula sorosa, rarius 

 sparsa, et paranemata, passim antheridiomorpha. 



a. Encoeliece^ cavae: — Dictjosiphon^ StictyosipJiont 

 Striaria^ Encoeliuni ( Hcdodictyon ) . 



b. Dictyoteos^ solidae: — Padinella^ Phycolapathum^ 

 Phyllilis^ Soranthera^ Cultleria, Halysejis, Stereocladon, Dicty- 

 ota, Zonaria.^ Padina, . . 



FA3I. 17. SPOROCHNINiE noh. 



Thallus fusco-olivaceus v. lutescens, siccat. nigrescens v. 

 virens, filaris ramosus v. compre.ssus lobatus, pinnalifid. et 

 serrulatus, raro globosus, quibusd. axi articulato et cellulis 

 mesolhallii majorib. prseditus, fulcro conico v. fibrilloso. Pa- 

 ranemata ovuhfera interna v. externa^ quibusd. steriha et 



30 



