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 A HISTORY OF SUFFOLK No attempt has been made in recent years to catalogue the marine flora of Suffolk, the list of sea-weeds in Henslow and Skepper's Flora of Suffolk (London, i860) (H. & S.) being the most recent known to me. These authors were doubtless greatly assisted in compiling their list by the account of the Norfolk and Suffolk algae published by Messrs. C. J. and James (afterwards Sir James) Paget in their Sketch of the Natural History of Yarmouth in 1834. Various Suffolk localities are also mentioned in Dawson Turner's Synopsis of the British Fuci, Dillwyn & Turner's Botanist's Guide (O.B.G.), Greville's yfl^ae Britannic^ (Grev.), and Harvey's Phycologia Britannica. I have myself collected at various points on the Suffolk coast, and my friend Mr. George Massee of the Royal Herbarium, Kew, has kindly presented me with a number of specimens collected by him at Felixstowe. The nomenclature used in the present list is that of my Catalogue of the British Marine Algae. No/e. — The writer, the late Mr. E. A. L. Batters, F.L.S., had himself gathered most of the species here recorded for Suffolk, or had seen specimens from it. In other cases the source of information is given. MvXOPHYCrAE Dermocarpa prasina, Born. Hvella caespitosa, Born. Spirulina subsalsa, CErsted. Oscillatoria Corallinx, Gom. Lyngbya aestuarii, Liebm. — semiplena, J. Ag. Symploca hydnoides, Kiitz. Plectonema terebrans, Born. Microleus chthonoplastes, Thur. Calothrix confervicola, Ag. — scopulorum, Ag. Rivularia atra. Roth. Mastigocoleus testarum, Lsgerh. Anaboena variabilis, Kiitz. — torulosa, Lagerh. Chlorospermeab Prasiola stipitata, Suhr. Mono.nroma Grevillei, Wittr. Percursaria percussa, Rosenv. Enteromorpha clathrata, J. Ag. — torta, Reinb. — compressa, Grev. — Linza, J. Ag. — intestinalis. Link. Ulva l.ictuca, L. Ulothrix flacca, Thur. Endoderma Flustrae, Batt. Tellamia contorta, Batt. Urospora isogona, Batt. Chaetomorpha tortuosa, Kutz. — linum, Kiitz. — aerea, Kutz. — Melagonium, Kiitz. Rhizoclonium riparium, Harv. Cladophora pellucida, Kiitz. (H. & S.) — Hutchinsiae, Harv. — rupestris, Kiitz. — hirta, KUtz. — utriculosa, Kiitz. — glaucescens, Hary. — fracta, Kutz. — arcta, Kiitz. Gomontia polyrhiza, Bern. Brjopsis plumosa, Ag. FUCOIDEAB Desmarestia viridis, Lamour. — ligulata, Lamour (Grev.) — aculeata, Lamour. Scytosiphon lomentarius, J. Ag. Punctaria plantiginea, Grev. Asperococcus fistulosus, Hook. Ectocarpus confervoides, Le Jol. — siliculosus, Kiitz. Pylaiella litoralis, Kjellm. Arthrocladia villosa, Duby. (Grev.) Elachistea fucicola. Fries. Sphacelaria cirrhosa, Ag. Cladostephus spongiosus, Ag. — verticillatus, Ag. Stypocaulon scoparium, Kiitz. Chordaria flagelliformis, Ag. (H. & S.) Mesogloia vermiculata, Le Jol. (H. & S.) Leathesia difformis, Aresch. Sporochnus pedunculatus, Ag. (Grev.) Chorda filum, Stackh. (H. & S.) Laminaria saccharina, Lamour. var. phyllitis, Le Jol. — digitata. Lam. (H. & S.) Cutleria multifida, Grev. (H. & Fucus spiralis, L. — vesiculosus, L. — serratus, L. Ascophyllum nodosum, Le Jol. Pelvetia canaliculata, Decne. & Thur. (H. & S.) Himanthalia lorea, Lyngb. (H. .&S.) Halidrys siliquosa, Lyngb. Cystoseira granulata, Ag. (H. & — ericoides, Ag. Turner — fibrosa, Ag. Tilopteris Mertensii, Kiitz. (H. & S.) Dictyota dichotom.a, Lamour. Taenia atomaria, J. Ag. (Grev.) 78 Florideae Bangia fuscopurpurea, Lyngb. Porphyra umbilicalis, Kiitz. var. laciniata, J. Ag. Acrochaetium Daviesii, Nag. (H. & S.) Scinaia furcellata, Bivona (Grev.) NaccariaWigghii,EndI. (H.&S.) Chondrus crispus, Stackh. Gigartina steliata, Batt. Phyllophora epiphylla, Batt. — membranifolia, J. Ag. Ahnfeltia plicata. Fries. Callophyllis laciniata, Kiitz. Cystoclonium purpureum, Batt. RJiodophyllis bifida, Kiitz. (Grev.) Gracilaria conferi'oides, Grev. Calliblepharis ciliata, Kiitz. Rhodymenia palmata, Grev. Lomentaria articulata, Lyngb. — clavellosa, Gail. (Grev.) Chylocladia ovata, Batt. (Grev.) Plocamium coccineum, Lyngb. Nitophyllum ramosum, Batt. — Gmelini, Grev. Phycodr}-s rubens, Batt. Delesseria sanguinea, Lamour. — alata, Lamour. — ruscifolia, Lamour. (Grev.) — hypoglossum, Lamour. (Grev.) Bonnemaisonia asparagoides, Ag. (Grev.) Bostrychia scorpioides, Mont. (H. & S.) Rhodometa subfusca, Ag. — lycopodioides, Ag. (H. & S.) Laurencia pinnatifida, L:imour. Chondria dasyphylla, Ag. (Grev.) Polysiphonia urceolata, Grev. var. comosa, Ag. var. patens, J. Ag. — elongata, Grev. — fastigiata, Grev. — nigra, Batt. — nigrescens, Grev.