Eu-Floridese, Ceramiege, Ceramium. 1453 



sporangia in tumoribus proeminentibus cellulosis ct minute acu- 

 leatis, externo latere geniculorum singulis, interrupte seriata, im- 

 mersa, singula aut pauca. Color et habitus fere Ceramii rubri. 



IV. Tribus Sparganogonia J. Ag. Anal. algol. II, p. 17: species geniculis steri- 

 libus latioribus complanatis beterocystideis, nempe cellulis geniculorum mediis 

 latioribus subangulatis, exterioribus fere in fila subdivisis, marginem supe- 

 riorem in junioribus truncatum servantibus, infeviorem mox conspicue de- 

 currentem, demum (in adultioribus) ex utroque margine quasi laceris iilis 

 magis conspicue excurrentibus ; zonis nudis inter superiora genicula bi*evio- 

 ribus, inter adultiora ob fila decurrentia subobtectis; tetrasporangiis exte- 

 riore ramulorum latere initio singulis, demum pluribus collateralibus im- 

 mersis. 



12. Ceramium echionotum .1. Ag. Advers. p. 27, Sp. II, p. 131, Epicr. 2271 

 p. 102, Harv. Phyc. Brit. t. 191, Reinhard Mat. fl. alg. Schw. 

 Meer. p. 128, c. fig., Ardiss. Phyc. Medit. I, p. 119, Hauck Mee- 

 resalgen p. 111, f. 39, Echinoceras oxyacanthum Kuetz. Phyc. 

 germ. p. 292, Chmtoceras echionotum Kuetz. in Bot. Zeit. 1847, 

 p. 35, Acanthoceras echionotum Kuetz. Sp. p. 684, Tab. Phyc. 

 XII, t. 97, f. a-d, Acanthoceras distans Kuetz. Tab. Phyc. XII, 

 (1862) p. 29, t. 98, f. a-c, Acanthoceras oocyacanthum Kuetz. 

 Sp. p. 684, J. Ag. Sp. II, p. 144, Acanthoceras transcurrens Kuetz. 

 Sp. p. 684, Tab. Phyc. XII, t. 97, f. e-g, J. Ag. Sp. II, p. 144, 

 Ceramium dalmaticum Menegh. in Giorn. botan. ital. 1844, 

 p. 186, Kuetz. Sp. p. 685, J. Ag. Sp. II, p. 141, Ceramium echi- 

 nophorum Menegh. in Giorn. botan. ital. 1844, p. 180, Kuetz. Sp. 

 p. 685, J. Ag. Sp. II, p. 144, Ceramium azoricum Menegh. in 

 Giorn. botan. ital. 1844, p. 185, J. Ag. Sp. II, p. 144, Acantho- 

 ceras azoricum Kuetz. Sp. p. 685, Tab. Phyc. XII, t. 98, f. d-f, 

 Ceramium hirsutum Schousb. mscr., Ceramium laterale Schousb. 

 Alg. n. 290. — Fronde subsetacea, regulariter dichotomo-decompo- 

 sita fastigiata, segmentis erecto-patentihus, terminalibus forcipatis 

 incurvis, articulis inferioribus diametro 3-4-plo longiorihus, inter- 

 stitiis pellucidis nudis, geniculorum spinulis sparsis inarticulatis 

 hyalinis; tetrasporangiis externo forcipum latere ad genicula sin- 

 gulis; cystocarpiis in segmento lateralibus subgeminis, involucro 

 polyphyllo cinctis. 



llab. in oceano Atlantico ab Anglia et Gallia usque ad Gades, 

 Tingin et Gibraltar et insula^ A.zoricas; in mari Ligustico (Stuaffo- 

 rello), Tyrrheno et Adriatico (Menegiiini, Hauck) et in Mcditer- 



