78 Cyclosporiiire, Sargassaceae, Sargassiim. 



aspera: infinia duplo latiora et evidentius costata, aliis conformia. 

 VesiculiB sphieric», minuti^e, Lente fere minores, petiolo glanduloso. 

 Keceptacula oblongo-obovoidea, (piam in affinibus minus ramosa, 

 eximie verrucosa at inermia, 4-4.5 millim. longa. — Var. dissimile 

 Grun. in Piccone Manipolo Alghe del mar Rosso 1889, pag. 14: 

 glandulis rarioribus et minus prominentibus, foliis lanceolatis, ob- 

 tusis vel acutis, profunde vel fimbriato-dentatis, sparsim vel bise- 

 riatim glandulosis, obscure fuscis, membranaceis ; vesiculis sphaB- 

 ricis, muticis. minute et parce glandulosis, petiolo eglanduloso suf- 

 fultis, receptaculis androgynis inermibus. Ad insulam «Adjuz» pr. 

 Massauam in mari Rubro (Marcacci). — A planta typica differt glan- 

 dulis multo minus elevatis. Cciespes crassus densusque; specimina 

 70-80 cm. alt. 



117. Sargassum latifolium (Turn.) Ag. Sp. p. 18. Syst. p. 298, J. Ag. ui 

 8p. 1, p. 334, 8p. 8arg. Austral. p. 103, De Not. Alg. mar Rosso 

 p. 18, Sargassum polycarpum Do Not. Alg. niar Rosso p. 17, . 

 Zanard. Plant. mar. Rubri Enum. p. 238, Sargassum suhrepandum 

 Kuetz. Tab. Phyc. XI. f. 2, non Forsk., Sargassum acinaciforme 

 Piccone Algol. eritr. p. 308, non Montagne, Sargassnm Portierianum 

 Zanard. Plant. mar. Rubri Enumeratio p. 232'?, Fiicus latifolius 

 Turn. Hist. Fuc. II, p. 66, tab. 94. — Rachidibus ramorum anci- 

 pite-planis e marginibus distiche ramosis, foliis lanceolato-oblongis, 

 repando-dentatis, costatis, sparsim elevato-glandulosis ; vesiculis in 

 petiolo ipsis sublongiore sphaericis muticis; receptaculis axillaribus 

 furcato-ramosissimis, cymosis, cylindraceo-verrucosis, inermibus. 



Hah. in mari Rubro (Valentia, Bove etc). — E radice scu- 

 tata surgunt rachides juveniles plures omnino plana? diu simplices 

 foliis(iue tantum ornatce. sensim ramosie, pluripedales, ramis e mar- 

 gine distichis. Folia inferiora usque semidecimetrum longa et un- 

 gue parum angustiora, superiora paulo breviora, nunc repanda 

 dentibus subobsoletis, nunc acute et spinuloso-dentata. Vesiculae 

 Pisi semine majores, aliquando drupam Pruni spinosa^ fere aequan- 

 tes, vix conspicue glandulosse, mutica?, in petiolo sa^pe plano et 

 ipsis sublongiore. Receptacula in axillis aggregata, folio fulcrante 

 multiplo breviora. — Var. zanzibaricum (Trun. in Born. Algues du 

 Tadjoura n. 12, Hedwigia 1889, p. 189 : foliis late lanceolatis, re- 

 mote dentatis vel subintegerrimis, nervo ante apiceni evanescente 

 percursis, remote et minutissime punctatis, rigidis, fusco-nigrcscen- 

 tibus ; vesiculis spha^ricis vel junioril)us paruin oblongis, muticis 

 v. subapiculatis, petiolo subcurvato sursum paruin dilatato suffultis; 



