3 

 III. PJiCvozoosporinK. — Thallus miilticellularift (rarius i. c. iu 

 Si/ngeneticis ') et Plupocapsaceis uni-pauci-cellularis), forina adiiio- 

 (liiin varius ct magiiitudine maxime ludens, nonnuniquam ^^fi^anteus. 

 tunc liliforniis siini)lex aut ramosus, tunc memhranaceus integer lo- 

 batusve, continuus aut clathratus, erectus aut Iiori/ontaliter expan- 

 sus, structuram admodum diversam praebens. 



Propaj^atio divisione cellularum vegetativa aut fragmentis thalli 

 aut propagulis peculiaribus aut cellulis agilibus (phoeozoosporis). 



Generatio sive zygotis e pha^ozoogonidiorum (pha^ozoogametorum) 

 copulatione isogama aut heterogama ortis sive ex evolutione oosphaerae 

 denium immobilis a phaiozoogameto minori masculo foecundata^ eflfor- 

 matis. 



Ordo I. CyclosporinaB 



Cyclo-sporbm .\rescli. [1817] Pliyc scand. p. 250, Kjellm. [1890] Handbok I, p. 1. 

 Fucacecv C. Ag. [1824] Syst. A\'^. p. XXXVII (excl. genei'.), J. As?. Sp. I (1848), 

 p. 180, Kjcllm. [1893] in Engl. & Prantl Natiirl. Pllanzenlam. 97, p. 2G8 et seq. 

 Fucoidece Grev. [1830] Alg. Bi-it. Syn. p. XXIX. 

 Fucecc Reiclienb. [1828] Consp. p. 29 (excl. gen. Furcellaria). 



Thallus, seu frons, sgepius magnitudine insignis et forma summo- 

 pere ludens, saxicola ') aut rarius epiphyticus, varie divisus. vesiculis 

 (aerocystis) instructus vel destitutus, structura admodum varia donatus. 



Cronan {BuW. Soc. Bot. de France 1855, t. II, p. 444) zoogonidia (anne antlie- 

 rozoidia?) in Halyseride polypodioide vidisse statuerunt; nuperrime ilhistris 

 J. Agardh (Analecta cont. I, 1894) ample de liac quajstione pertractat et Di- 

 ctyotaceas peraffines Cutleriaceis credit; quoad Bictyotaceas ergo certum ma- 

 net, quod post numerosas observationes clarorum Thuret, Crouan, J. Agardli, 

 Reinke, T. Johnson, adhuc sub judice lis est. 



') De Synyencticis cfr. Berthold in Nova Acta Leop. Carol. Akad. XL (1878); 

 Rostadnski Hydrurus i jego pokrewienstwo, Krakow 1882;KIebs in Bot. Zeit. 

 1882; Wille Alg. Mittheil. in Pringsh. Jahrb. XVIII; Lagerheim in Ber. d. deutsch. 

 bot. Gesellsch. Band VI (1887) etc. 



-) De Sargassorum formis natantibus et mare sic dictum Sargassorum ef- 

 flcientibus cfr. Humb. Ansicht. p. 74;Mart. FI. Bras. p. 49; Mcyen Reise; Mi- 

 quel in Bull. des Sc. Phys. et d'Hist. Nat. en Neerl. 1839, p. 198; J. Agardh in 

 Forhandlinger ved de Skandinaviske Naturforskeres Andet Mode i Kjobenhavn 

 1840, p. 334; 0. Kuntze in Engler Jahrb. f. Syst. Bot. I (1880), p. 191-239 et 

 in The Nature vol. XX (1879), p. 552 et 578 (Wild) ; A. Stoppani II mare dei 

 Sargassi in Nuova Antologia di sc. lett. XIX (1884), p. 55-85; A. Piccone Alc. 

 Sp. del Mar di Sargasso in Mem. R. Accad. dei Lincei 1889; J. Ag. Sp. Sarg. 

 Austral. 1889 etc. 



