G E N E R .A. 



25. Pliycomater Fr. 



2 6. Clilorococcum Grev. 

 Olivia Graij. 

 Protospliaeria Tiirp 

 Micraloa Biasol. 



27. Ilaemalococcus Ag. 



28. Prolococcus Ag, 



Sphaerella Hommerf. 

 Coccopbysium IA\ 

 Zoogalactiua Sette. 

 Aerophyton Meijen. 



29. Palmella Lyngh. 



Coccochinrls S/Jr. 

 Pristleya Mey. 

 Chaos HoTy. 

 Merettia Gray. 



Undina Fr. 



Hydrococcus Lh. 



TSostoc Tainh. ^ 

 Leadiesia Grai/. 



Corynephora Ag. 



Clavatella Bory. 

 Rivularia Rt/i. 



Linckia Lyngb. 



Gaillardotella Bory, 



Stylobasis Sc/muib. 



Stypnion Raf. 

 Myrionema Grev. 

 Chaelophora Ag. 



Rivnlaria Bonnemnis. 



Myriodactylon I)esv. 



Anhaltia Scf/Wabe. 

 Hydrocoryne Sr/iwaOe. 

 Scythymenia Ag. 



Sedes. Plurimae acniarum dulcium incolae, paucae marinae, non- 

 nullae meleoricae, quaedam in inundatis palustribus, aliae in solo v. saxis 

 roridis, imo in ipsa nive et glacie generantur. Nixrubra, regionum arcticarura 

 et summarum alpium miraculum, sanguinis pluviae, toties inter infensi numi- 

 nis portenla gentium annalibus consignatae, ex hac gente sunt. 



fjsus. Nostoc cornmune Vauch. CTremella Nostoc Linn. vulgo Stern- 

 schmippen) jove fervida aesta'.e tonan'e in pratis nascens, quasi coelo delapsum, 

 magnis alchemistarum studiis (luaesilum, in sanandis vulneribus, et in pel- 

 lendo arthrilico dolore olim salulare creditum. 



Ordo III. Confervaceae. 



Fila capillaria, meinbranacea v. filamentosa, intus sive c.xtus 

 articulata, simplicia v. ramosa,- libera aul inlerdum reticulatim 

 contexta, viridia, rarius fusca v. purpurea, interdum hyalina. 

 Sporidia viridia, fila farcientia v. in arliculis inflatis contenta. 



G E N E R A. 



TRIB VS L LEPTOMl TEJE. 



37. Hygrocrocis Ag. 



38. Leptomitus Ag. 



Saproletrmia Nees. 

 Achlya A>es. 

 Flydronema Carus. 

 Pythium Nees. 

 Sphaerotilus Ktz. 



TRIB US II. OSCILLA TORINAE. 



39. Oscillaria Bosc. 



OscIUatoria Vauch. 

 Trichophora Bonnemais . 

 Sphaerozya Ag. 



40. Microcoleus Desinaz. 



Vaginaria Bory. 



41. Anabaina //6»ry. 



42. Lyngbya Ag. 



Cyclosperma Bonnem. 

 Humida Gray. 

 Ulothrix Kiitz. 



43. Calolhrix ^g-. 



Elisa Gray. 



44. Bangia^^. 



Merizomyria PolUn. 



45. Scytonema Ag. 



? Percursaria Bonnem. 



46. Sligonema /4^. 



Girarrtia Gray. 



47. Sphaeroplea Ag. 



Cadmus Bory. 

 Sphaerogona LTc. 

 Sphaeroplethia Duby. 

 TR. IIL BATRACHOSPERMEAE. 



48. Myxonema Fr. 



Nematrix Fr. 

 Myxotrix Fr. 



49. Draparnaldia liorjt/. 



Charospermum LJr. 



50. Batrachospevmum Itf/t. 



Draparnaldina Bory. 

 Monilina Bory. 

 Thorinia Bory. 

 Ijemanina Bory. 

 Gelatinaria Roust. 

 Torularia Bonnem. 

 ? Aegira Fr, 



51. Mesogloia Ag. 



Helminthora Fr. 

 Dufresneya Bommn. 



1* 



