NOTES ON THE MARINE BOTANY OF THE COAST OF NORFOLK. 77 



and autumn. Griffithsia equisetifolia and G. setacea often occur on the beach 

 near Yarmouth. G. simplicifilum and corallina are also found on this coast, 

 but far more rarely. Many species of the genus Callithamnion are abundant; 

 these are C. Turneri, tetrngonum, hracliiatum, poli/Hpermum, corymbosum, and 

 pedicellatum. G. roseum was first discovered by Mr. Sowerby, growing on 

 Fucus vesiculosus at the mouth of the River Yare, near Yarmouth, in August, 

 1797, where it occurs not unfrequently in the summer months. G. Borreri 

 is a rare species on this coast; it was first found on the Yarmouth beach 

 by Mr. Borrer, in October, 1806. G. tlmyoideum is another species first 

 found by Mr. Borrer on this coast: it is rare. G. byssoidewn is found at 

 Cromer, but is by no means common. 



We now come to the third class of Algae, the Ghlorospet-meeB. The plants 

 of this class may be at once distinguished from all other Algae by their 

 bright grass-green colour. By f:ir the greater number are found in fresh- 

 water streams, ponds, and ditches; but, in conformity to the heading of this 

 paper, I shall only notice the marine species. Of the first order, Sijilionacece, 

 I am aware of only two species being found on this coast, namely, Godium 

 tomentoswm and Bryopsis plumosa. I have never yet found Vaucheria marina 

 on this coast, though I should fully expect its occurrence, as the plant it 

 most frequently grows on, Furcellaria fastigiata, is very abundant. Amongst 

 the Gonfervace(B, the most common species are Gladophora rupestris, IcBtevirens, 

 arcta, glaucesens, SLndfrada. G. pellucida occurs not uncommonly at Yarmouth, 

 though, I believe, is not found further north. G.Jiexuosa was first discovered 

 in the salt-water ditches near Yarmouth by Mr. D. Turner, where it is found 

 not uncommonly; it also occurs in the salt-water ditches near Cley. G. albida 

 and lanosa are not uncommon at Cromer. G. fiavescens is found not unfre- 

 quently in the salt-water marshes near Yarmouth. Ehizocloniimi ripariwm and 

 Gonferva Linum are also found in the same situation. Gonferva tortuosa and 

 C. dfrea often occur on the coast, mostly at Cromer. G. melagonium seems 

 a rare species on this coast. G. collabens: only one specimen of this beautiful 

 Sea-weed has ever been found; it was found at Yarmouth, floating on a piece 

 of deal, by Sir W. J. Hooker, and is, I believe, now preserved in that 

 gentleman's herbarium; it is a much stouter plant than G. cerea, and of a 

 beautiful green colour, which is well retained in the dried plant. G. Youngana 

 has been found on the piers of Yarmouth jetty, but is rare. Enteroviorpha 

 intestinalis and compressa are found everywhere in abundance in the spring 

 and summer months. E. erecta, clathrata, and ramulosa are also frequent on 

 many parts of the coast. The remaining species which I have to notice 

 are Ulva latmima, JJ. Lactuca, U. Lima, Porphyra laciniata, P. vulgaris, 

 Bangia fasco-purpurea, Galothrix confervicola, G. scopulorum, and Lynghya 

 flacca, all of which occur frequently on most parts of the coast; and with 

 these species my notes conclude. 



The foregoing list contains, I believe, all the species of Algae that are, 

 or have been, found on this coast; and I trust it will not be without its 



