930 Eu-Floridese, Polysiphonieae, Polysiphonia. 



auctoribus dicitur hsec species P. atrorubesccnti simillima, caule 

 flexuoso diversa; Pol. anisogoncv quoque propinqua, hgec vero 

 textura et consistentia diversissima. Suadente J. Agardh, est Po- 

 lysiphonia fusco-rubens magis P. variegatce quam aliis speciebus 

 propinqua. 



8(3. Polysiphonia furcellata (Ag.) Harv. in Hook. Brit. Fl. II, p. 332, 

 Man. p. 90, Phycol. Brit. tab. VH (inexacte, quoad dispositiouem 

 tetrasporangiorum), Mont. Pl. cell. Canar. pag. 172, Kuetz. Phyc. 

 gen. p. 425, Sp. pag. 820, Tab. Phyc. XIII, t. 79, f. e-g, J. Ag. 

 Sp. II, 3, p. 1025, Ardiss. Phyc. Medit. I, p. 384, Hauck Meeres- 

 algen p. 239, Polysiphonia ceramiaiformis Crouan Alg. Finist. 

 n. 305 (siphonibus, fide J. Ag., 10-11)?, Polysiphonia forcipata 

 J. Ag. Alg. med. pag. 127, Polysiphonia lcevigata Kuetz. Phyc. 

 gener. p. 425, Sp. p. 822, Tab. Phyc. XIII, t. 84, f. d-f, 85, f. a-d, 

 Grammita patens Bonnem. Hydr. loc. p. 42, flg. II, B, Hutchin- 

 sia furcellata Ag. Sp. II, p. 91, an Polysiphonia coarctata Kuetz. 

 Sp. p. 807, Tab. Phyc. XIII, t. 37, f. a-c (sec. Hauck)?, Lamou- 

 rouxia turgidula Bonnem. olim. — Caespite erectiusculo, filis a 

 basi ecorticatis, articulatis, decomposito-dichotomis, ramis subfasti- 

 giato-corymbosis, ramulis a basi attenuatis plus minus forcipatis, 

 axillis patentibus, articulis 8-9-(12?)-siphoniis, primariis diametro 

 3-4-plo longioribus, superioribus sequalibus; tetrasporangiis in ra- 

 mulis distorto-liexuosis seriatis; cystocarpiis ovato-globosis, ses- 

 silibus, adpressis. 



Hab. in oceano Atlantico ad littora Anglias, Gallise, Hispanire 

 et insul. Canariensium (Montagne); in mari Ligustico ad « Tou- 

 lon » Gallia3 (D. na Favarger); in mari Jonico ad « Acireale » Sicilioe 

 (Ardissone); in mari Mediterraneo inferiori ad insulam « Galli- 

 tam » (Piccone); in mari Adriatico, passim (Zanardini, Hauck). — 

 Csespes aliis Algis adnatus, fere globoso-expansus, diametro 4-10 

 cm. Fila inferne vix setacea, sensim at parum sursum attenuata, 

 dichotomiis crebris decomposita, dichotomiarum ramis alternis in 

 latus dejectis brevioribus et densius dichotomis, ssepe corymboso- 

 fastigiatis; demum lateraliter ramosa apparent. In inferiore parte 

 rami distantiores, supra axillas eximie patentes incurvati, superne 

 nunc patentissimi, nunc convergentes et plus minus regulariter 

 forcipati, ramulis a basi longe attenuatis. Ramelli semel vel plu- 

 rios furcati organa sistunt agamicaa propagatinnis, iis Sphacelaricr 

 analoga et qualia pro P. Agardhiana a Kuetzing Tab. Phyc. XIII, 

 t. 49, f. f pinguntur; de his cfr. Bornet Alg. de Schousboe p. 311. 



