194 



Ectocarpus pusillus. St. Miclmel's Mount, Cornwall. 



sphcBrophorus. Mount's Bay ; Sennen Cove, Land's End ; Milford Haven ; 



near the Menai Bridge. 



Mertensii. Mount's Bay, near Penzance. 



Helminthocladia virescms. Common. Plymouth; Mount's Bay; Aherystwith; Caer- 

 narvon ; Bangor, &c. 



Mesogloia multifida, var. subsimplex. Land's End. 



Hudsoni. Aberffraw, Anglesea. 



coccinea. Salcombe. 



Gloiosiphonia capillaris. Mount Edgecombe ; Eev. W, S. Hore. 



Naccaria Wigyhii. Salcombe. 



Nitophyllum punctatum, (3. ocellatum. Mount Edgecombe ; Eev. W. S. Hore. 



, ulvoideum. Scilly Islands ; Miss M. Wliite. Mount Edgecombe ; Rev. 



W. S. Hore. Salcombe. 



Gmelini. Mount Edgecombe ; Rev. W. S. Hore. Bracelet Bay, Gla- 



morganshire, very abundant. 

 Rhodomenia reniformis. Witsand Bay, Land's End. 

 Rhodomela scorpioides. Plymouth, abundant. 

 Bonnemaisonia asparagoides. Scilly Islands ; Miss M. White. Mount's Bay ; Mr. 



Caraow. 

 Chrjlodadia parvula. Falmouth ; Miss Warren. Mount's Bay. 

 Gigartina GriJ/ithsice. Mount's Bay. 

 Chondrus norvegicus. Mount's Bay. 

 Grateloupiafilicina, (Eng. Bot. t. 2780). Lynmouth, Devonshire ; Rev. W- S. Hore. 



Mount's Bay, plentiful. 

 Ptilota plumosa, a. major. Between Holyhead and Holyhead Mountain. Although 



this fonn is common in Scotland and the North of England, it becomes very 



scarce as we advance southward. 

 Polysiphonia parasitica. Mount's Bay ; Land's End ; Holyhead. 



■ cristata. Mount's Bay ; Mr. Camow. Land's End. 



thuyoides. Ilfracombe, plentiful ; St. Michael's Mount. In Mr. Dill- 



wyn's herbarium are specimens of this plant gathered thirty years ago. 



. spinulosa. Falmouth Bay ; Miss Warren. 



. violacea. Plymouth ; Mrs. Griffiths. Caernarvon. 



. pulvinata. Salcombe ; Mount's Bay ; Land's End. 



byxsoides. Shores of Wales, common. 



Dasija ocellata. Mill-pool opposite Devonport ; Eev. W. S. Hore. Mount's Bay. 

 Spyridia filamentosa. Cove near Aberffraw, plentiful ; Holyhead. 

 Griffithsia equisetifolia. Coast of North Wales, common. 



corallina. Caernarvon. 



Callithamnion Hookeri. Salcombe ; Mount's Bay ; Milford Haven. 



roseum. Falmouth ; Miss Warren. Salcombe ; Teignmouth ; Milford 



Menai Strait; Barmouth. 

 byssoides. Falmouth ; Miss Wan-en. Mount's Bay ; Milford Haven 



Caernarvon. 



• polyspermum. Teignmouth ; Salcombe ; Plymouth ; Mount's Bay 



Milford ; Bangor ; Caernarvon, Sec. 

 Borreri, /3. aeminudum. Land's End. 



