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 A HISTORY OF CORNWALL nor did Mr. H. Goode, and as the two gentlemen exchanged specimens, and the latter obtained many foreign species, which were not always labelled with their localities, some little doubt pertains to some of the specimens distributed by Mr. Smith. For many years Dr. J. Ralfs, a most accurate botanist, explored the marine flora of west Cornwall, in company with Mr. E. D. Marquand and Mr. W. Curnow. Mr. A. Kenwood Teague for a short time collected algas in Mount's Bay and added the new British species Peyssonelia atropurpurea, Crn. Mr. R. V. Tellam has added many species to the Cornish flora, and not a few of the records from Saltash, Fowey, Looe, Pridmouth, Par, Falmouth and Pad- stow are the result of his long continued and persevering research. Mr. E. M. Holmes has also visited Mount Edgcumbe, Torpoint, Looe, Fowey, Falmouth, the Lizard, Penzance, Padstow, Newquay and Bos- castle, and is therefore able to confirm many of the Cornish records from these localities. Some of the rarities found in these places have been issued in the ten fasciculi of Holmes' Algae Eritannlcce rariores. In the following list these are indicated by the letter ' H ' followed by their number in the fasciculi. The alga? of the Scilly Islands have been but little investigated. Mr. Jesse Robbins, formerly of Kew Gardens, collected atTresco in 1885, where he found the rare Gigartina pistillata. The late Mr. E. George visited the islands in 1899 and 1900, and discovered a species new to science, which has been named after him Rhodopbysema Georgii by Dr. E. A. L. Batters. Another interesting species found by him in the same islands is a species described by Kiitzing under the name of Phycolapathum crispatum. This species had been lost sight of as a European plant for nearly fifty years until its rediscovery by Mr. George. It has since been referred to another genus by Dr. Batters as Punctaria crispata. One of the most interesting discoveries made in this county was that of a Japanese seaweed, found by the late Mr. T. H. Buffham, F.L.S., amongst rejectamenta at Falmouth. It is furnished with remark- able hooked branchlets, by the development of which into narrowing rings the plant attaches itself firmly to other algae, and continues its growth. In 1900 Mr. Holmes in company with Mr. George found the plant actually growing in considerable quantity at Falmouth, and the previous year it was found by Mr. George at Shanklin ; so that the plant has evidently become naturalized in this country, and is the first instance of a naturalized alga on record, although there is a possibility that Nito- phyllum venulosum, which Mr. Holmes found growing at Whitsand Bay, but elsewhere known only from the Adriatic, as well as Stenogramme interrupta dredged at Plymouth, Penzance and Wicklow in Ireland, but which is a native of the Australian seas, may have been naturalized many years ago in this country. The species at present restricted to Cornwall but which may possibly be hereafter found in other counties are : Ectocarpus Stilophoras, Crn., /. cervicornis, Nitophyllum venulosum, Zan. Batt. Punctaria crispata, Batt. Hymenoclonium serpens, Batt. Rhizoclonium riparium, var. Casparyi, Nemastoma marginifera, J. Ag. Holm. & Batt. 82