Cydosporiiuv, Sargassaccte, Saryassum. 61 



« Massaua » (li. Bressanin). — Yar. Diotis Grunow in Piccone 

 Alghe della Ycttor Pisani p. 46 : ramis coniprossis et foliis latioribus, 

 minus argutc dentatis, obscure olivaceo-fuscis. Ad « Colombo » ins. 

 Ceylon;Te (C. Maiicacci). — A *S'. paciftco differt receptaculis argute 

 dentatis foliis^jue niinus rigidis^ a, S. lUcifolio Ag. foliis angustio- 

 ribus. — Forma serrulatum Grun. in Piccone Manipolo Alghe del 

 mar Rosso 1889, p. !:>: receptaculis omnibus acuto-spinulosis. 

 Ad «Disei» insuhim prope Massauam in mari Rubro (Marcacci). 

 Ultra 10 dm. alt. — Forma phyllocystum Grun. in Piccone 1. c. 

 p. 13: foliis plerisque ol)tusiusculis; vesiculis sa3pe folia terminan- 

 tibus; receptaculis onmibus spinosis (fo^mineis ? vel androgynis jam 

 evacuatis"?). Natans in sinu «Hamfelah» in mari Rubro cuni Me- 

 lohesia opiphytica, (Maucacci). — Ultra 5 dni. a,lt. 



01. Sargassum caiophyllum De Not. in Zanard. Plant. maris Rubri oi 

 Enum. p. 228, n. 2, Sargassum cuneifolium Fig. et De Not. Alg. 

 mar Rosso p. 10 non J. Ag., Sargassum cinctum. yd.i\ elata Grun. 

 in Piccone Algol. eritrea p. 302, n. 49?. — Rachidibus ramorum 

 liliformibus teretiusculis levibus, foliis tenuibus oblongo-linearibus, 

 obtusiusculis, acute serratis, evanescenti-costatis, minute glandulo- 

 sis; vesiculis in petiolo plano ipsis breviore spha3ricis, muticis; 

 receptaculis supra-axillaribus, compresso-ancipitibus, acute serra- 

 tis, subracemosis. 



Hab. ad «Suez et Akaba» in mari Rubro (Portier, Figari); 

 in sinu Assabensi (Doria, Piccone). — Frons 30-40 cm. (nonnum- 

 quam 1 Met.) alta, ramosissima. circumscriptione eximie lanceo- 

 lata; rami dense foliiferi, axillis compressiuscuhs. Folia membra- 

 nacea, subtilissima, diaphana, basi vix oblique cuneata, 20 cm. 

 longa, 2-3 millim. lata, lineari-lanceolata, quandoque ovato-oblon- 

 ga, margine dentibus plerumque acutissimis spinulosis subrepando- 

 serrata, subduplici serie minute glandulosa, costa supra medium 

 evanescente porcursa. Vesicuhie semine Pisi minores, petiolo plano 

 cuneatoJSuffultce, juniores liaud raro apiculatae, parce glandulosa;. 

 Receptacula supra axillam foliorum vel e vesicularum petiolo orien- 

 tia, subracemosa, follifera complanata. torta, margine acute serra- 

 ta, folio fulcrante breviora. Color planta; olivaceo-tlavescens. 



92. Sargassum clonocarpum Grun. in Picc. Manipolo Alghe del mar <,2 

 Rosso 1889, p. 9. — Rachidibus paruni compressis vel plerumque 

 terctiusculis; foliis basi cunoata latc lanceolatis vel oblongis obtusis, 

 acute hiiic inde duplicato-dentatis. costa anto apicem evanescente 

 percursis, sparsini glandulosis, obscure fuscis. mombranaceis; vo- 



