202 Myxophycese, Oscillatoriete, Trichodesmium. 



368. Oscillatoria terebriformis Levier = 0. Grunoioiana Gom. 



369. — terebriformis p Beggiatoiformis = 0. heggiatoiformis. 



370. — natans incrustans Kalch. = (). hegyiatoiformis. 



371. — subsalsa Kjelhn. = 0. ienuis Ag. (cfr. Rosenv. Groenl, 



Havalg. p. 967). 



372. — intermedia Crouan = 0. Bonnemaisonii Cr. 



373. — colubrina Thur. = 0. Bonnemaisonii. 



374. — dubia Kuetz. = 0. ornata Kuetz. 



375. — Poerzleriana Rab. = limosa forma. 



TRICHODESMIUM Ehr. [1830] in Poggend. Ann. Phys. und Chem. 

 r^)d. XVIII, p. 506 (Etyni. thrix, trichos pilus et desme fasciculus), 

 Xanthotrichum et Heliotrichwm Wille [1893] in Schuett Pflanzen- 

 leben d. Hochs. p. 39, Oscillatorim sp. Auct. — Trichomata cy- 

 lindracea, evaginata, in fasciculos squamiformes, discretos, libere 

 natantes, muco fugacissimo aggregata, apice recta, attenuata, leviter 

 capitata. Cellula apicalis truncato-conica, calyptram convexam pr?e- 

 bens. 



Obs. In societatibus immensis per Oceana pra3cipue ?equatorialia 

 vagans. A gen. Oscillatoria vix distinguendum. 



1. Trichodesmium erythraeum Ehr. in Poggend. Ann. 1830, p. 506, 

 Montagne Syll. p. 469, n. 1670, Rab. Fl. Eur. Alg. II, p. 161, 

 W. et N. Alg. exs. n. 998, Gom. in Morot Journ. de Bot. IV, 

 p. 356, Monogr. p. 196, t. V, f. 27-30, Wille Schizoph. d. Plankt. 

 Exped. p. 53, t. I, p. 28-35 Oscillaria erythroia Kuetz. Phyc. gener. 

 p. 188 (1843), Tr. Ehrenbergii Montagne Mem. sur le phenom. de 

 la color. de la mer Rouge in Compt. rend. Acad. 1844 et Annal. 

 des sc. nat. 3 ser., II, p. 332-362, t. X, Kuetz. Tab. Phyc. II, 

 t. 91, f. III, Sp. p. 286, Trichodesmium Hindsii Mont. in Ann. Sc. 

 Nat. 3 ser., bot. II, p. 360, t. X, f. (/, 1844, Kuetz. Sp. p. 287, 

 Tab. Phyc. I, p. 49, t. 91, f. IV, Rab. Fl. Eur. Alg. II, p. 16. — 

 Fasciculis brevissimis, vix ad 1 mm. longis, purpureo-sanguineis, 

 siccitate griseo-viridibus vel fuscescentibus; trichomatibus rectis, 

 parallelis, ad genicula constrictis, tenuioribus, apice sublonge atte- 

 nuatis, crassioribus, brevissimis, 7-11 (raro usque ad 21) [x. cras- 

 sis; articulis diametro suboequilongis vel usque triplo brcvioribus, 

 5,4-11 [1. longls, contentu grosse granuloso farctis, granulis ple- 

 rumque in regione axiali articulorum magis frequentibus. 



Hab. mare Rubrum (Ehrenber«, Dupont, Ostenfeld, Johs. 



