En-Ploridea', Cliaotangieo?, Cliaetanginm. 110 



4. Chaetangium flabellatum H;irv. Vl. Tasm. p. ^Ki, J. A^^. Epicr. 220 

 p. r)4(). — l^^ronde angiistissimo lincari, com[)ressa, rogulariter di- 

 cliotoma lastigiata, segmentis patentibus flabellatim expansis plu- 

 ries furcatis, apicibus obtusis. 



Hah. ad littus Tasmaniai (Harvey). — Chcetangio varioloso 

 (Mont.) J. Ag. angustior, colore Lnctior, structura convenicns dicitur. 

 Substantia cartilagineo-cornca ; superficics lucida; color rubcr. 



Snbr/eii. II. Ch.etangium (Knetz.) J. kg. Sp. II, p. 461, Epicr. p. SoQ: Fronde com- 

 planata vage snbdivisa, prolilieationibns a disco margineqne provenientibns 

 sjTppe decomposita. 



5. Cbaetangium ornatum (Lin.) Kuetz. Phyc. gener. p. 892, Sp. p. 792, 221 

 Tab. Phyc. XIX, t. 49, J. Ag. Sp. H, p. 4G1, Epicr. p. 539, Facus 

 vittalus ;S ornatus L Mant. p. 312, Fucus ornatus Thunb. Prodr. 

 Cap. p. 181, Grateloupia ornata Ag. Sp. Alg. I, p. 222, Fucus 

 erinaceus Turn. Hist. Fuc. I, Tab. 26, Cluutangium Hystrix 

 Kuetz. Sp. p. 793, Tab. Phyc. XIX, t. 49, Grateloupia Hystrix 

 Ag. Sp. I, p. 223. — Fronde plana, lineari, oblonga, simpliciuscula, 

 bifida aut cuneatim expansa et sul)palmata, a disco et margine 

 prolifcra, prolificationibus conformibus. 



Hah. ad Caput Bonae Spei (Thunberg, Chamisso, Lalande, Pappe, 

 Binder). — Frondes gregaria'. ab eodem callo radicali exeuntes, 

 7-10 cm. (rarius ad 3 dm.) alta^, 7-10 millim. et in majoribus 

 etiam 5 cm. latae, basi cuneatse, dein plerumque plus minus li- 

 nearcs aut oblongaB, integriusculae aut in lacinias paucas conformes 

 deorsum fissa^, nunc ambitu late cuncatae ct superne palmatifissre. 

 A disco marginibusque totius frondis proveniunt prolificationes nu- 

 merosissima^, totam frondem sa^pc invcstientes, nunc minuta' pa- 

 pillaiformes, nunc valde evoluta!, frondi ut plurimum conformes 

 aut simplices linearcs et fcre lingulatie, cuneatae bifida^ vel palma- 

 tfie, nudcC aut iterum prolifene. Fructus prolificationibus innati. 

 Substantia corneo-mcmbranacca. Color fusco-purpurcus. Erga cla- 

 ros Areschoug (Phyc. nov. p. 27) ct Grunow (Alg. Novara p. 80) 

 contendit illustris J. Agardh Epicr. p. 539 Chcetanglum saccatu^m 

 formam juvenilem Chcetangii ornati (L.) Kuetz. haud sistere. 

 G. Chaetangium Zeyheri (Hering) Kuetz. in Botanische Zeitung 1847, 222 

 p. 24, Sp. Algarum p. 793, J. Ag. Sp. II, p. 4G2, Grateloupia 

 Zeyheri Hering mscr. — Fronde irregulariter bipinnata, pinnulis 

 brevibus, cylindriformibus, lanceolatis, basi attenuatis, plcruinque 

 unilateralil)us, pinnis sa3pe furcatis. 



