Die braunen und rothen Algen von Helgoland. 



273 



B. Rhodophyceae. 



Bangia fuscopurpurea Dillw. sp. 

 Porphyra laciniata Lightf. sp. 

 Helminihora divaricata Ag. sp. 

 Helminthocladia purpurea Harv. sp. 

 Nemalion multißdum Web. et 



Mohr sp. 

 Chantransia virgatula Harv. sp. 



— Daviesii Lyngb. sp. 



— secundata Lyngb. sp. 

 Scinaja furcellata Turn. sp. 

 Gelidium capillaceum Gmel. sp. 

 Chondrus crispus L. sp. 

 Ahnfeltia plicata Huds. sp. 

 Phyllophora membranifolia Good. et 



Woodw. sp. 



— Brodiaei Turn. sp. 



— rubens Good. et Wood. sp. 

 Actinococcus roseus Suhr sp. 

 Cystoclonium purpurascens Huds. sp. 

 Gracilaria confervoides L. sp. 

 Plocamium coccineum Huds. sp. 

 Chylocladia clavellosa Turn. sp. 



— rosea Harv. sp. 

 Delesseria ruscifolia Turn. sp. 



— sanguinea L. sp. 



— alata Huds. sp. 

 Dasya coccinea Huds. sp. 

 Chondria dasyphylla Woodw. sp. 

 Laurencia pinnatifida Gmel. sp. 

 Rhofomela subfusca Woodw. sp. 

 Polysiphonia elongata Huds. sp. 



— byssoides Good. etWoodw. sp. 



— atrorubescens Dillw. sp. 



— urceolata Lightf. sp. 



Polysiphonia nigrescens Dillw. sp. 



— violacea Roth sp. 

 Ptilota plumosa L. sp. 



— elegans Bonnern. 

 ßpermothamnion Turneri Mert. sp. 



— roseolum Ag. sp. 

 Antithamnion Plumula Ellis. sp. 



— cruciatum Ag. sp. var. pu- 



milum Cr. 

 Callithamnion corymbosum Engl, 

 bot. 



— plurnosum Kütz. 



— polyspermum Ag. 

 Rhodochorton Rothii Engl. bot. sp. 



— memtoanaceum Magnus. 

 Ceramium rubrum Huds. sp. 



— diaphanum Lightf. sp. 



— strictum Grev. et Harv. 



— Deslongchampi Chauv. 

 Gloiosiphonia capillaris Huds. sp. 

 Dumontia filiformis Fl. dan. sp. 

 Halarachnion ligulatum Woodw. sp. 

 Fastigiaria furcellata L. sp. 

 Polyides rotundus Gmel. sp. 

 Petrocelis Ruprechtii Hauck. 

 Cruoria pellita Lyngb. sp. 

 Cruoriella armorica Crouan. 

 Peyssonelia Dubyi Crouan. 

 Hildenbrandtia rosea Kütz. 

 Corallina officinalis L. 



— rubens L. 

 Lithothamnion polymorphem L. sp. 

 Lithophyllum Lenormandi Aresch. 



sp. 



18 D.Bot.GeB. 9 



