Protococcoicleae, PalmellaceEe, Hj-clroil^^ction. 561 



gatio cellularuin bipartitioiie vegetativa succedanea, zoogonidiis et 

 cellulis perduraiitibus. 



Subfarailia prima Coenobieae Fallvenb. 



Cosnobiem Fallvenb. [1882] in Schenk, Handb. der Botanik, II. Band, pag. 275, 

 Hansg. [1888] Prodr. p. 108, De-Toni [1888] Consp. chloroph. in Notarisia 

 III, n. 10, p. 450. 



Hijdrodictyaceai Falkenb. [1882] loc. cit. 



Cellulae vegetativa^ in cosnobium forma determinata consociatce; 

 coenobia cellulis filialibus singulae ejusdemque forraationis coastituta, 

 libere in aqua vigentia. 



Multiplicatio tura cellularum singularum coenobii divisione vege- 

 tativa, tum macrozoogouidiis (propagatio) tura microzoogonidiis sae- 

 pius insimul copulantibus (generatio) ; zygota e raicrozoogonidiorum 

 copulatione orta in statum perdurantem transeuntia. 



Conspectus tribuum 



Ifijdrodictijece. Zoogonidia e conteutus cellularum divisione simultanea orta; 



cellulae plurinucleata3. 

 Pediastrece. Zoogonidia e contentus cellularum bipartitione succedanea orta; 



cellulae uninucleattie. 



Tribus prima Hydrodictye.e (Dumort.) Kuetz. 



Hijdrodictyeoi Kuetz. [1843] Phyc. gener. p. 281, Species pag. 448, Rabenh. 



[1868] Fl. Eur. Algar. III, p. 65, Hansg. [1888] Prodr. p. 108. 

 Hydrodtctynece Dumort. [1822] Comm. bot. p. 71. 



CellulEe plurinucleatai, in coenobium reticulato-saccatura, pertu- 

 sum, pulcherrimura consociatae; zoogonidia e contentus cellularum di- 

 visione siinultanea orta. 



HYDRODICTYON Uotli [1800] Tent. FI. Germ. III, pag. 501 (Etjm. 

 hf/dor aqua et diclyon retis), Areschoug De Ilydrodictyo utricu- 

 lato, Lundse 1839, A. Braun Die Verjiingung in der Natur, 1851, 

 Algarum unicell. genera 1855, Cohn in Nov. Act. vol. XXIV, p, 1, 

 p. 209, Pringsheim in Monatsb. der k. Akad. der Wissenschaften 

 zu Berlin, 1860, pag. 777, Jahrbiicher fiir wissenschaftl. Botanik 

 vol. I et II, 5, Zoosp. Hydfodictyon iu Ann. Scienc. Nat. 1860, 

 p. 52, Cesati in Hedwigia I, p. 10, Rabenh. Fl. Eur. Algar. III, 

 pag. 66, Kirchn. Alg. Schles. pag. 93, Cooke Brit. Freshw. Alg. 

 p. 35, De-Toni e Levi Fl. Alg. Ven. III, p. 77, Han^g. Prodr. 



36 



