A HISTORY OF DURHAM 



PHjEOPHYCEiB {continued) 

 Sphacelariacea 



Sphacelaria radicans, Harv. 



— cirrhosa, C. Ag. 



— fusca, Holm. & Batt, 

 Chaetopteris plumosa, Kiitz. 

 Cladostephus spongiosus, C. Ag. 



— verticillatus, C. Ag. 

 Halopteris filicina, Kutz. 

 Stypocaulon scoparium, Kutz. 



Myrionetnacees 



Myrionema strangulaiis, Grev. 



Chordariacea 



Chordaria flagelliformis, C. Ag. 



MesoglcEa vermiculata, Le Jol. 



Castagnea virescens, Thur. 



Leathesia difformis, Aresch. 

 Scytoi'tphonacees 



Phyllitis Fascia, Ktitz. 



Scytosiphon lomentarius, J. Ag. 

 Chordacets 



Chorda Filum, Stackh. 

 Larninariacecs 



Laminaria saccharina, Laiiix. 



— Phyllitis, Le Jol. 



— digitata, Edm. 

 Alaria esculenta, Grev. 



Fiicacea 



Fucus ceranoides, Linn. 



vesiculosus, Linn. 



— serratus, Linn. 

 Ascophyllum nodi)Sum, Le Jol. 

 Pclvctia canaliculata. Dene & Thur. 

 Himanthalia lorea, Lyngb. 

 Halidrys siliquosa, L)ngb. 

 Cystoseira ericoides, C Ag. 



Tiloptertdact'ts 



Tilopteris Mcrtensii, KOtz. 

 Dictyotacex 



Dictyopteris polypodioides, Lamx 



RHODOPHYCEi^ 



Porphyracets 



Bangia fusco-purpurca, Lyngb. 

 Porphyra linearis, Grev. 



— laciniata, C. Ag. 

 Helminthoclad'taceis 



Chantransia Daviesii, Thur. 



— virgatula, Thur. 

 Hclminthocladia purpurea, J. Ag. 



Gelidiaccce 



Gelidium corncum, Lamx. 

 Gigtirtinaceee 



Chondrus crispus, Stackh. 



Gigartina mamillosa, J. Ag. 



Phyllo|)hora Brodi.ti, J. Ag. 



— membrariifolia, J. Ag. 

 Gymnogongrus norvegicus, J. Ag. 

 Ahnfeltia plicata, Fries. 



Rhodophyce^ (continued) 

 G'lgartinacea (continued) 



Callophyllis laciniata, Kutz. 

 RhodophylUdacea 



Cystoclonium purpurasccns, KOtz. 



Catenella Opuntia, Grev. 



Rhodophyllis bifida, Kiitz. 

 Spharocaccacea 



Calliblepharis ciliata, Ktltz. 

 Rhodymeniacea 



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. 

 Bonnemaisoniaceie 



Bonnemaisonia asparagoides, C. Ag. 

 Khodomelaceee 



R-hodomela subfiisca, C. Ag. 



— lycopodioides, C. Ag. 

 Odonthalia dentata, Lyngb. 

 Laurencia pinnatifida, Lamx. 



— caespitosa, Lamx. 

 Polysiphonia urceohita, Grev. 



— elongata, Grev. 



— violacca, VVyatt. 



— fibrillosa, Grev. 



— fastigiata, Grev. 



— atro-rubcscens, Grev. 



— nigrcscens, Grev. 



— parasitica, Grev. 



— byssoides, Grev. 



— Brodia;i, Grev. 

 Dasya coccinea, C. Ag. 



Ceramiacea 



Spermothamnion Turneri, Aresch. 

 Griffithsia coraliina, C. Ag. 



— setacca, C. Ag. 

 Halurus equisetitolius, KUtz. 

 Rhodochorton Rothii, Nag. 



— floridulum, NUg. 



— sparsum, Kjcllm. 

 Callitliamnion polyspermum, C. Ag. 



— Hookcri, C. Ag. 



— arbuscula, Lyngb. 



— tetragonum, C. Ag. 

 Plumaria elegans, Bonnem. 

 Ptilota plumosa, C. Ag. 

 Ceramium Deslongchampsii, Chaur. 



— diaphanum, Roth. 



— rubrum, C. Ag. 



— prolitera, J. Ag. 



f 



74 



