Eii-Floridese, Gigartineae, Gigartinn. 223 



tetrasporiferis levibus, carposporiferis per totam siiporliciem ipsum- 

 «lue marginem hixo papillosis, linea intramarginali latioro nudis, 

 papilJis storilibus longioribus lingulatis, fertilibus cystocarpia sin- 

 gula mutica terminalia gerentibus. 



Hab. ad littus Tasmaniae et Nova^ HoIIandiae meridionalis. — 

 V'rondes pro ratione gigantea' (fragmentis observatis bipodalibus) 

 colore e purpureo livido insignes. Ha3C species et propter colorem 

 et propter substantiam potissimum accedere videtur ad Gigm^tinam 

 circimicinctam. 

 57. Gigartina Raduia (Esp.) J. Ag. Alg. Liebm., Sp. II, p. 278, p]picr. 439 

 p. 202, Fucus Radula Esper Icon. P^uc. II, p. 3, t. 113, Sphw- 

 rococcus Radula Ag. Sp. Alg. I, p. 208 et Syst. p. 222, Irida^a 

 Radula. Bory in Voy. Coqu. p. 107, Fucus bracteatus Turn. Hist. 

 Fuc. tab. 25, Mastocat^pus bracteatus Kuetz. Sp. p. 733, Iridaui 

 (Mastocarpus) insignis Endl. et Dies. in Botan. Zeitung. 1845, 

 p. 289, Kuetz. Sp. p. 734, J. Ag. Sp. II, p. 278. — Sucursali 

 vage ramosi erectiusculis basi cylindraceis mox spatbulatis demum 

 cuneata basi longiori in frondem pei'magnam elliptico-oblongam 

 carnoso-crassam abeuntibus, frondibus sterilibus disco levibus aut 

 rugosis margineque integerrimis dentatis ligulatisve, tetrasporan- 

 giferis rugosis soros rotundatos disco immersos gerentibus, car- 

 posporiferis per discum totum marginemque papilliferis, papillis 

 cystocarpia singula mutica gerentibus. 



Ilah. ad Caput Bon?e Spei (Pappe. Lalande). — Varietates sequen- 

 tes distinguend;e sunt: Var. ametliystina J. Ag. Epicr. p. 203, Ma- 

 stocarpus polycystis Kuetz. Tab. Phyc. XVII, t. 44, Iridcm lapa- 

 fhifolia Kuetz. Sp. p. 729, Tab. Phyc. XVII, tab. 16 (forma spo- 

 rifera): disco marginequo levibus, papillis fructiferis vix pedicellatis. 

 — Var. Hystrix (Ag.) J. Ag. Epicr. p. 203, Grateloupia Eystrix 

 Ag. Sp, I, p. 223, Chcetangium Hystrix Kuetz. Sp. p. 793: Ma- 

 stocarpus bracteatus Kuetz. Tab. Phyc. XVII, t. 43, Mastocarpus 

 incrassatus Kuetz. Tab. Phyc. XVII, tab. 41 (forma sporifera), 

 Mastocarpus Radula Kuetz. Phyc. gener. Sp. p. 733, Tab. Phyc. 

 XVII, t. 40, Gigartina corymbifera Knetz. Tab. Phyc. XVII, t 46 

 (ex oris Californiae)?: disco plus minus evidenter rugoso margineque 

 dentato, rugis dentibusque nunc in foliola minuta totam frondem 

 obtegentia abeuntibus, cystocarpiis subpedicellatis. - - Var. clathrata 

 (Dec.) J. Ag. Sp. II, p. 279, Epicr. p. 203, Chondrodictyon capense 

 Kuetz. Phyc. p. 396, Sp. p. 730, Tab. Phyc. XVII, Fucus Agaruni 

 Web. et Mohr Beitr. I, p. 284 sec. Kuetzing, Mastocarpus polycar- 



