448 Plnrczoosporiiue, Dictyosiiilioiiaccm, Dictyosiplion. 



iii oceano Atlantico ;id oras Gallitc et Balnisiie ; in « Skagerack», 

 in sinn Kiliensi (Reinke) in mari Mediterraneo in sinn liigdunensi 

 (Derbes, Solier), in niari ligustico ad « Porto Maurizio » (Straffo- 

 EELLo), ad « Cornigliano » et « Portofino » (sec. Ardissone), ad « Al- 

 ])issoIa marina» (Pigcone), in mari tyrrlieno ad Neapolin (F.\l- 

 kenberg) et ad «Cagliari» Sardinia? (Genn.uii, Piccone); in mari 

 Adriatico orientali (Hauck, Zan.\rdini); in mari Nigro (Reinhard). 

 — Ciespituli pauca millimetra altitudine aii|uantes, quasi tomento 

 niatricem (sfepius folia Zosfenr obtegentes, exsiecati bruiinci. 



Familia XVI. DICTYOSIPHONACEiE (Kuetz., Thur. 



Vidijosiphonacac Kuctz. [1849] Spec. .\lgar. p. 484, Thur. [1863] iii Lc .lol. 

 List. Al?. Clierh. p. 72 (Dicliiosiphonec), De Toni Syst. Uebers. Fucoiil. 

 1891, p. 179, Kiellm. iu Engl. & Prautl NaUirl. Pflauzcufam. 86, p. 212. 



Frons noduli radicalis vel disci ope affixa, filiformis, fere semper 

 fistulosa, passim inflata, parencliymatica, cellulaj apicalis opc in lou- 

 gitndinem crescens, quoquoversum ramosa, ramis aut conformibus aut 

 diftbrmibus, pilis numerosis (pra-cipue in individuis junioribus) in- 

 structa. Sporangia (unilocularia) e transformatione cellulaj strati 

 corticalis efformata, et tunc in stratn exteriori frondis nidulantia. 



Conspectus generum. 



.■1. Stratum cxterius fromlis fertilis eontextum arcto parencltymaticum 



prsebens. 



Dirfj/o-nphon Grev. — Frons plus miiius cava, saspius quoquoversum ramosa. 



/>'. Stratum e.vterius frondis fertilis e fllis axi longitudinali perpendiculari- 



hus plus minus laxc coliiliitis constans. 



Cobin Reiiike. — Frons sa3pe inflata, niucosa, lubrica, simplex aut sparse rc- 



gulai-iter ramosa. 

 S';/lofhfinvn>s Hook. et Harv. — Frons solhla, liauil mucosa, repetite ramosn, 

 raiiiis difformibus (et longioi-ibus et hrevioribus). 



DICTYOSIPHON Grev. [1830] Alg. Brit. p. 55 (Etym. (licti/oti retis ct 

 .s/)Jin,> lulms), .T. Ag. Sp. I, p. 81, Arescli. in Botan. Notiser 1873, 

 II. 104. Obscrv. pbycol. III (1875), p. 26, Reinke Algenll. westl. 

 Ostsee 1889, p. G3, De Toai Syst. Uebers. Fucoid. 1891, p. 179, 

 Ivjellm. Handbok I, p. 49, Engl. & Prantl Natiirl. Pflanzenfam. 8(1. 

 Lief. p. 214, Sci/tosiphoiii.s, Chordaricc, Fiici, Ceramii, Confermv 

 sp. auct., Coilonema Aresch. [1872] Alg. Scand. cxsicc. n. 323-324 



