Eu-Florideae, Polysiphoniefe, Polysiphonia. !)09 



circiter 2 mm. longi sunt deliquescenter dichotomo-decoinpositi, 

 subfastigiati, apicibus obtusiusculis. In his tetrasporangia verru- 

 cose prominentia seriata sunt, inferiorem partem occupantia, apice 

 sterili. Cystocarpia in ramulo crassiori sessilia ramulisque bra- 

 cteata, ovato-urceolata. Articuli ubicumque nisi iu ramulis corti- 

 oati, superficie reticulata, in ramis diametro duplo hreviores, ut 

 ex positione ramuloruin conspiciatur, in ramulis diametro coqua- 

 les : siphones 4 circa centralem sunt strato denso corticati. Frons 

 exsiccatione nigrescit et chartse adhaeret. 

 5.",. Polysiphonia spinosa (Ag.) J. Ag. Alg. Med. p. 140, Sp. II, 3, p. 1000 1518 

 (incl. var. Ranieriana, fronde tota fere corticata), Kuetz. Sp. p. 833, 

 Tab. Phyc. XIV, t. 20, f. d-e (stichidifera), Hauck Meeresalgen 

 p. 230, Ardiss. Phyc. Medit. I, p. 109, Hutchinsia lubrica Ag. Sp. 

 Alg. II, p. 94, Potysiphonia lubrica Zanard. Syn. p. 62, Hutchin- 

 sia pilosa Nacc. Alg. Adr. p. 37, Fl. Venet. n. 1207, fig. 2, Po- 

 lysiphonia pilosa Zanard. Syn. p. 62, Kuetz. Sp. pag. 833, Tab. 

 Phyc. XIV, t. 20, f. a-c (tetrasporifera), Polysiphonia fihrillosa 

 J. Ag. Alg. med. p. 138 (non Dillw.), Polysiphonia acanthocarpa 

 Kuetz. Sp. p. 836, Tab. Phyc. XIV, t. 26, f. c-e (cystocarpifera), 

 Hutchinsia Ranieriana Zanard. Mein. sopra un" Alga nuova, cuiii 

 icone, Polysiphonid Ranieriana Zanard. Syn. p. 63, Rhodomela 

 spinosa Ag. Syst. pag. 200, Polysiphonia spinulosa Grov. Scot. 

 crypt. Flora t. 90, Harv. Pliyc. Brit. tab. 320, Kuetz. Sp. p. 831, 

 Tah. Phyc. XIV. t. 15, f. a-c, J. Ag. Sp. II, 3, p. 999, Ardiss. 

 Phyc. Medit., I, p. 409, Polysiphonia Carmichaeliaua Harv. in 

 Hook. Brit. Flora II, p. 328, Phyc. Brit. tab. 319?, Hutchinsia 

 spinulosa Ag. Sp. II, pag. 75 (suadente loco natali), Hutchinsia 

 Biasolettiana Ag. Sp. II, p. 106 (non Bot. Zeit. 1827, p. 638, quse 

 ad Polysiphonia variegatam pertinet), Polysiphonia Biasoletliana 

 J. Ag. Sp. II, 3, p. 958, sec. Hauck. — Globoso-expansa, subin- 

 tricata, irregularius pinnatiin ramosa ramulisque interspersis ob- 

 sita, plus minus setate longe corticata, apicibus rainulisque supe- 

 rioribus mollioribus penicillatis, inferioribus spinulifonnihus sim- 

 plicibus aut basi parce spinellosis, articulis 4-siphoniis, inferioribus 

 corticatis diametro brevioribus usque duplo longiorihus, superiori- 

 bus r.iniuloruinque nudis diametro aaqualibus; tetrasporangiis in 

 ramulis verrucoso-distortis ; cystocarpiis ovato-globosis, fere ses- 

 silibus. 



llnb. in mari Adriatico ad Venotias (Zanardini, D. na Favar- 

 ger), ad :< Cattolica » et « Aucona » (Galdesi), Tergeste (C. A- 



