Eu-Floridefe, Polysiplioniese, Polysiplionia. 911 



dis ceterum conformibus, obsita; rami ramulique basi non tenuio- 

 res, apice longe attenuati. A.rticuli in inferiore parte corticata pa- 

 rura conspicui, dein evidentes, infernc diametro breviores, supe- 

 riores aequales aut parum longiores. Sectione transvcrsali siphones 

 4 magni circa centralem tcnuiorem conspiciuntur, strato corticali 

 in inferiore parte admodum evoluto ; siphones ipsi, ubicumque ob- 

 serventur, sunt longiores. Cystocarpia magna, pedicello articulato 

 suffulta, ovata. Tetrasporangia et in rainis terminalibus frondis et 

 in prolificationibus lateralihus evoluta, in ramulis distorto-fiexuo 

 sis a hasi versus apicem seriata. Color ramorum coccineus, partis 

 infcrioris purpurascens. Ramis superiorihus specimina chartfle laxe 

 adhserent. Ad littus Dalmatise occurrit species quredam, sub no- 

 niine Potysiptionicc elongellce a claro Meneghini descripta, postea 

 nomine Po/ysiphonicc tophuroidis a Kuetzing Sp. p. 824 enume- 

 rata, denique in Tab. Phyc. XIII, t. 91, f. a-b (stichid.) illustrata, 

 quae forsan ad genuinam P. elongellam Harv. pertinet. Suadente 

 ill. J. Agardh, hsec species Harveyana a Polysiphonia elongata 

 differt magnitudine minore, crespitibus globosis, ramificatione ma- 

 gis fastigiata, ramis ramulisque basi non attenuatis, articulis bre- 

 viorihus, in planta tota superiorc facilius conspiciendis. A P. va- 

 riegata et P. collabente differt fronde crassiori, densius et sursum 

 longius corticata, articulorum longitudine et siphonihus 4. P. bre- 

 viarticutata est planta magis lateraliter ramosa, rainus corticata 

 articulisque hrevioribus instructa. 

 57. Polysiphonia ornata J. Alg. Alg. med. p. 185, J. Ag. Sp. II. 3. 1520 

 p. 1003, Kuetz. Sp. p. 829, Ardiss. Phyc. Medit. I, p. 108, Hauck 

 Meeresalgen p. 228, Potysiphonia caspia Kuetz. Phyc. gen. p. 430, 

 Sp. p. 832, Tab. Phyc. XIV, t. 16, f. d-f. — Cespite erectiusculo, 

 filis decomposito-dichotomis inferne firmioribus sursum longe cor- 

 ticatis apice tenuioribus, axillis patentibus, fertilibus dense virga- 

 tis, ramulis sinipliciusculis aut divaricato-furcatis a basi longe 

 attenuatis, articulis 4-siphoniis diametro suhduplo brevioribus ; 

 tetrasporangiis in ramulis distorto-fiexuosis seriatis; cystocarpiis 

 subglohosis, 400 jj.. diam., subsessilihus breviterve pedicellatis. 



Hab. inter Corallia et inter alias Algas intricata in mari 

 Adriat. orient. (Biasoletto, Hauck, J. Agardh, Zanardini); in mari 

 Caspio (Eichwald). — Coespes glohoso-expansus, 6-10 cm. et ultra 

 longus. Fila primaria pennam passcrinam crassa, superne in cras- 

 sitiem capillarem attenuata, inferne divaricato-ramosa in csespitcm 

 radicalem intricata at s;cp(> ita conglutinata, ut non nisi fraetis 



