— 229 — 



dentes, cilo crescenles, oscillantes v. sorpentes, vaginulati v. 

 slrato miicoso conjuncli (puncta ocularia et tentacula in 

 quibusdani observata): — Spirulinay Oscillaria^ Phormidium^ 

 Microcoleus^ Trichodesmium. . . . 



b- L ep t o t ri ch e ce: tubuli tranquilli similes v. goni- 

 diis in fila longa coalitis pleni: — LcpLothrix ^ Sjnploca, 

 Entolhrix. . . 



c. hynghyecB: tubuli discarthri, simplices v. ramosi, 

 ovulis lateralibus: — Ljnghja, Leihleinia^ Blennolhjix^ Ca- 

 lothrix^ Dictycnema. . . . 



d' Scjtoneniece: tubuli discarlhri v. sphaerarlhri, vagi- 

 iiali> ovulis interstitiahbus: — Scjtonema, Sirosiphoji. . . 



F A M. 5, C O N F E R V I N .« . 



Catenulae viridcs, rarius acliroae, flavescenles v. purpuras- 

 cenles, simpl. v. ramosae , peridermide membracca passim 

 cinctae, gonidiis mobihbus, demum in ovula fusca v. rubra 

 congiomeratis. 



a. Zjgnemece: catenulae simpHces <, dcmum copu- 

 lalae; ovula fusca v. purpurasc. in trabecuhs copulativis v. in 

 ccilulis: — Mougeotia, Staurospermum.^ Spirogyra^ Zjgnema^ 

 Zjgogonium (Kzg.). 



b. Confervece: catenulae simpl. v. r.tmosae; gonidia 

 dispersa v. demum in ovula inlerstitiaha conferta: — Sphce- 

 roplea.^ Psichohoimium^ Cvnferva., Khizoclordum., Cladophoray 

 Crenacantha, Pilinia. . . 



c. Ulotrichece: catenuUe mucosae, tencrrimae, bra- 

 chyarlhrae; gonidia exigua, demum in annulos et globulos 

 quaternos, v. in ovula mobihssima (gonidia oculata?) effigu- 

 rata: — Fischeria, Ulothrix, Stygcoclonium. 



d. H o r midie ce: catenulae brachyarthrae, globuhs go- 

 nimicis integris v. demum concentrice multiphcatis: — Gloe- 

 otila^ Hormidium; Schizogonium., Bangia. . . . 



FAM. 6. HYDRODICTYINVE. 



Cellulae elongatae, in reticulum pentagonale connexie, vi- 



