THE PHYTOLOGIST. 



No. XII. 



MAY, MDCCCXLII. 



Price Go. 



Art. LX. — Local Hies of British Algce in addition to those (/iven in 

 Harieifs Manual. By John Ralfs, Esq. 



Penzance, January 10, 1842. 

 Sib, 



Several of my friends having expressed their regret that Mr. Harvey 

 did not give a, greater number of new habitats in the ' Manual of British Algee,' though 

 considering the short stay he made in England I was surprized to find so many as there 

 are, I avail myself of the facility afforded by ' The Phytologist ' to make the following 

 addition to the number given in that work. I either possess, or have seen, specimens 

 from all the habitats given. 



My friend Mr. Dickie finds Gelidium? rostratum plentiful about Aberdeen, on the 

 stems of Laminaria digitata.* 



Yours very truly, 



John Ralfs. 

 To the Editor of ' The Phytologist.' 



I confine myself in the following List to the species mentioned in the Manual, or in the 

 ' Supplement to English Botany.' 



Cyatoseira granulata. Small cove near Abertfraw, Anglesea. 



Lichina conjinis. Common on most rocky coasts, as Devon, Cornwall, Wales &c., ge- 

 nerally within reach only of the spray. 



Laminaria dehilis. Salcombe ; April. 



fascia, (Eng. Bot. t. 2845). Salcombe ; Mount's Bay, Cornwall, plentiful ; 



April. 



Dictyota atomaria. Tenby ; Rev. T. Salwey. Bracelet Bay, Glamorganshire. 

 Dictyosiphonfceniculaceus, (Eng. Bot. t. 2746). Abundant in the Menai Strait. 

 Striaria attenuata. By flood-gates of mill-pool opposite Devonport. 

 Asperococcus compressus, (Eng. Bot. t. 2846). Mount's Bay. 



pusillus. Caernarvon. 



Sphacelaria filicina. Mount's Bay, sparingly ; between Holyhead and Holyhead 



Mountain. 

 ■ plumosa. Beaumaris ; thrown up on the shore at Barmouth. 



radicans. Ilfracombe ; Mount's Bay ; Land's End. 



F velutina. Torbay ; Salcombe ; Mount's Bay. 



Ectocarpus fasciculalus. Mount's Bay, on stems of Laminaria digitata. 



Hincksiae. Torquay ; Miss GriflSths. Breakwater, Plymouth ; Rev. W. 



S. Hore. 



crinilus. Salcombe. 



* See note by Mrs. Griffiths, page 203. 



