922 Eu-Floridese, Polysipliouiese, Polysiphoiiia. 



tiusculis, articulis omnibus 6-siphoniis, diametro paullo breviori- 

 bus vel sesquilongioribus; tetrasporangiis in media fere ramulo- 

 ruin parte parum torulosa seriatis. 



Hab in scrobiculis saxorum littoralium ad oras Bahusise (A.RE- 

 schoug); ad oras insulse Helgolandise (Hmjck). — Csespes semi- 

 globosus, 5-7 cm. altus, plexu radicali e fibris subrepentibus in- 

 torte ramulosis, rhizinas hyalinas vel dilute fuscas simplices inar- 

 ticulatas nunc obtusas nunc scutellatas emittentibus composito. 

 Fila erecta dense stipata, parce ramosa, denium subpinnatitn vel 

 pectinatim decomposita. Frons tota ecorticata. Sectione transversa 

 siphones 6 conspiciuntur. Articuli filorum repentium diametro du- 

 plo breviores, erectorum fere sesquilongiores. Tetrasporangia in 

 media ramulorum parte, immo in ramo, longe infra apices dispo- 

 sita. Color purpurasceus. Haec species Potysiphonicv variegatce ab 

 ipso auctore affinis dicitur, dubio adposito. 



75. Polysiphonia flabellulata Harv. in Proceed. Am. Acad. Vol. IV, 1538 

 p. 330, J. Ag. Sp. II, 3, p. 1063. — Fronde pusilla, capillari, flaccida, 

 brevi, repetite dichotoma fastigiata, axillis acutis, apicibus vix at- 

 tenuatis, articulis 6-siphoniis, otunibus diametro brevioribus. 



Hab, ad « Tanegasima » Japonioe (C. Wright). — Color ni- 

 grescens. 



76. Polysiphonia variegata (Ag.) Zanard. Syn. p. 60, J. Ag. Alg. med. 1539 

 p. 129, Sp. II, 3, p. 1030, Kuetz. Sp. pag. 821, Tab. Phyc. XIII, 



t. 81, f. d-f, Harv. Phyc. Brit. tab. 155, Nereis Bor. Amer. p. 45, 

 Born. et Thur. Etiul. phycol. tab. 42, Ardiss. Pliyc. Medit. I, p. 300, 

 Farlow Mar. Alg. N. Engl. p. 173, Hauck Meeresalgen pag. 236, 

 Conferva denudata Dillw. Syn. n. 160, tab. G, Hutchinsia de- 

 nudata Ag. Sp. p. 72, Polysiphonia aurantiaca Kuetz. Sp. p. 818 /, 

 Polysiphonia tinctoria De Not. Prosp. fl. Ligur. (fide J. Agardh) 

 Utchinsia Biasolettiana Nacc. Alg. Adr. (fide Zanard.)"?, Brous- 

 sonetia simplex Grat. mscr., Hutchinsia variegata Ag. Syst. 

 p. 153, Sp. II, p. 61, Polysiphonia lusitanica Mont. in Welw. Phyc. 

 n. 294, Kuetz. Sp. p. 818, Tab. Phyc. XIII, t. 74, f. e-h, J. Ag. 

 Sp. II, pag. 1068, Polysiphonia gonatophora Kuetz. Phyc. goner. 

 p. 426, Sp. p. 826, J. Ag. Sp. II, 3, p. 1070, Polysiphonia leptura 

 Kuetz. Sp. p. 824, Tab. Phyc. XIII, t. 89, f. f-i, J. Ag. Sp. II, 

 p. 1070, Polysiphonia denudata Kuetz. Tab. Phyc. VIII, t. 90, 

 f. a-d, non Polysiphonia Biasolettiana J. Ag., Ardiss. Phyc. Me- 

 dit. I, p. 380 (Hauck tribuit hanc specieni P. spinoscc). — C;e- 

 spite subgloboso, lilis a basi articulatis decomposito-dichotomis, 



