A HISTORY OF DURHAM 



PHJEOPHYCE.S: (continued) 

 Sphacelariacets 



Sphacelaria radicans, Harv. 



cirrhosa, C. Ag. 



fusca, Holm. & Batt. 

 Chaetopteris plumosa, Ktitz. 

 Cladostephus spongiosus, C. Ag. 



verticillatus, C. Ag. 

 Halopteris filicina, Ktitz. 

 Stypocaulon scoparium, Ktltz. 



Myrionemacets 



Myrionema strangulans, Grev. 



Gbordariacets 



Chordaria flagelliformis, C. Ag. 



Mesogloea vermiculata, Le Jol. 



Castagnea virescens, Thur. 



Leathesia difformis, Aresch. 

 Scytosiphonacees 



Phyllitis Fascia, Ktitz. 



Scytosiphon lomentarius, J, Ag. 

 Chordacete 



Chorda Filum, Stackh. 

 Laminariacea 



Laminaria saccharina, Lamx. 



Phyllitis, Le Jol. 



- digitata, Edm. 

 Alaria esculenta, Grev. 



Fucacets 



Fucus ceranoides, Linn. 



vesiculosus, Linn. 



- serratus, Linn. 

 Ascophyllum nodosum, Le Jol. 

 Pelvetia canaliculata, Dene & Thur. 

 Himanthalia lorea, Lyngb. 

 Halidrys siliquosa, Lyngb. 

 Cystoseira ericoides, C. Ag. 



Tilopteridacets 



Tilopteris Mertensii, Ktitz. 

 Dtctyotactte 



Dictyopteris polypodioides, Lamx 



RHODOPHYCE.S: 

 Porphyracets 



Bangia fusco-purpurea, Lyngb. 

 Porphyra linearis, Grev. 



laciniata, C. Ag. 

 Helmintbocladiacea 



Chantransia Daviesii, Thur. 



virgatula, Thur. 

 Helminthocladia purpurea, J. Ag. 



GeKdiaceee 



Gelidium corneum, Lamx. 

 Glgartinacece 



Chondrus crispus, Stackh. 



Gigartina mamillosa, J. Ag. 



Phyllophora Brodiaei, J. Ag. 



membranifolia, J. Ag. 

 Gymnogongrus norvegicus, J. Ag. 

 Ahnfeltia plicata, Fries. 



RHODOPHYCEJE (continued) 

 Gigartinacea (continued) 



Callophyllis laciniata, Kdtz. 

 Rhodophyllidacets 



Cystoclonium purpurascens, Ktitz. 



Catenella Opuntia, Grev. 



Rhodophyllis bifida, Kutz. 

 Sphtsrococcacets 



Calliblepharis ciliata, Kotz. 

 Rhodymeniacees 



Rhodymenia palmetta, Grev. 



Lomentaria articulata, Lyngb. 



clavellosa, Gaill. 

 Plocamium coccineum, Lyngb. 



Delesseriacea 



Nitophyllum laceratum, Grev. 

 Delesseria alata, Lamx. 



angustissima, Griff. 



Hypoglossum, Lamx. 



ruscifolia, Lamx. 



sinuosa, Lamx. 



sanguinea, Lamx. 

 Bonnemahoniacete 



Bonnemaisonia asparagoides, C. Ag. 

 Rhodomelacets 



Rhodomela subfusca, C. Ag. 



lycopodioides, C. Ag. 

 Odonthalia dentata, Lyngb. 

 Laurencia pinnatifida, Lamx. 



- caespitosa, Lamx. 

 Polysiphonia urceolata, Grev. 



elongata, Grev. 



violacea, Wyatt. 



fibrillosa, Grev. 



fastigiata, Grev. 



atro-rubescens, Grev. 



nigrescens, Grev. 



parasitica, Grev. 



byssoides, Grev. 



Brodiaei, Grev. 

 Dasya coccinea, C. Ag. 



Ceramiacets 



Spermothamnion Turneri, Aresch. 

 Griffithsia corallina, C. Ag. 



setacea, C. Ag. 

 Halurus equisetifolius, Ktitz. 

 Rhodochorton Rothii, Nag. 



floridulum, Nag. 



sparsum, Kjellm. 

 Callithamnion polyspermum, C. Ag. 



Hookeri, C. Ag. 



arbuscula, Lyngb. 



tetragonum, C. Ag. 

 Plumaria elegans, Bonnem. 

 Ptilota plumosa, C. Ag. 

 Ceramium Deslongchampsii, Chaur. 



diaphanum, Roth. 



rubrum, C. Ag. 



prolifera, J. Ag. 



74 



