MyxophyoeaB, Oscillatorieaj, Oscillatoria. 161 



21. Oscillatoria margaritifera (Kuetz.) (iom. Monogr. p. 21(3, t. VI, 387 

 f. 19, Oscillaria murgaritifera Kuetz. Tab. Pliyc. I, pag. ol, 



t. 13, f. X, 1847, Rab. Fl. Eur II, p. 112, non Kuhn in Rab. Alg. 

 n. 207, Oscillatoria insignis Tliw. in Harv. Man. of brit. Mar. 

 Alg. p. 229, Rab. Fl. Eur. II, p. 293, Oscillaria Boitnemaisonii 

 Reinb. Cyanoph. der Kieler Fohrde in Schrift. des Naturvv. Ver. 

 fiir Schlesw. Holst. VIII, II, p. 174, H. et R. Phyc. Univ. n. 474! 

 p. p. nec Crouan. — Trichoraatibus pulchre olivaceo-viridibus, in 

 stratuin nigrum agglomeratis, fragilibus, rectis, torulosis, 17-29 (a. 

 crassis, extremitatem versus longe et sensim arcuatis, apice leviter 

 attenuato obtusis; articulis diametro trichomatis 3-6-plo brevio- 

 ribus, 3-6 \x. longis; dissepimentis lineis margaritaceo-punctatis 

 aut granulis numerosis fasciatim congestis notatis; cellula apicali 

 capitata, calyptram leviter convexam proebente. 



Hah. salinas aut foveas aqua subsalsa repletas Angliie ad 

 Bristol (Thwaites), Germani;e ad Kiel (Reinbold), Gallite occi- 

 dentalis et meridionalis (Brebisson, Thuret, Gomont), Itali* ad 

 Veiietias (Meneghini); in America boreali, Mass. (Collins). 



22. Osciliatoria nigro-viridis Thwait. ia Harv. Phyc. Brit. p. XXXIX, 388 

 n. 375, t. 251«, Man. p. 229, Crouan Alg. du Finist. n. 3261 



Fl. Finist. p. 112 (sub OsciUaria), Gomont Mon. p. 217, t. VI, 

 f. 20, Cooke Brit. Freshw. Alg. p. 252, t. 28, f. 2 (?), CoII. in Coll., 

 Hold. et Setnh. Phyc. Bor. Amer. n. 1056! Oscillatoria insidiosa 

 Crouan Liste Alg. Finist. p. 371, 0. limosa r] chalybea Crouan 

 Fl. Finist. p. 112, Le Jol. Liste des Alg. mar. de Cherb. p. 27, 

 Farl. N. E. Mar. Alg. p. 33 (fide Coll.), non Moug. et Nest. nec 

 Ral). FI. Eur., Oscillaria fusco-atra Hauck in Hedwigia Bd. XXVII, 

 Hft. I, p. 15, Oscillaria Corallince Gom. Essai in Journ. de Bot. IV, 

 p. 356 p. p. — Strato expanso, nigro-olivaceo ; trichomatibus oli- 

 vaceis, modice elongatis, subrectis, fragilibus, torulosis, 7-11 [j.. 

 crassis, extremitateai vcrsus arcuatis, apice attenuatis, obtusis; 

 articulis diametro trichomatis 2-4-pIo brevioribus, 3-5 (x. longis; 

 dissepimentis linois gemiiiis, graiiulatis punctatis; cellula apicali 

 sut)capitata, membranam superne convexain leviterque incrassatam 

 pnebente. 



Ilab. in limite maris ad palos, muros, rupes CaIedoni;e prope 

 Ayr (Cutler, Holmes, Batters), Angliaj (Harvey, Thwaites, Cooke), 

 Hiberniye (West), SiiecisB (Gosselmann, Nordstedt), Galliae (Le Jolis, 

 Thuret, Crouan, Gomont), Istri;e ad Tergeste (Agardh, Hauck), 

 Italiaj in sinu neapolitano (Hinze), ins. Shiato Greci;e (Millia- 



11 



