THE KhGM OF THE CLYDE SEA AREA. 175 



L. hyperborea Foslie. Karnes, Bell, and Fintry Bays, Cumbrae: 

 and Kyles of Bute. 



Aglaozonia reptans Kiitz. Lamlasli Bay. Loch Ranza, Robertson. 

 Fucits ceranoides L. Loch Goil, Peareey. 



F. platycarpus Tlmr. Farlaud Point, Fintry and Bell Bays, 

 Kilchattan Bay, and Gare Loch. 



F. vesiculosus L. Gare Loch, Peareey. Heads of Ayr, Mathews. 



F. serratus L. Gare Loch and Loch Goil, Peareey. 

 *Ascophyllum nodosum Le Jol. Heads of Ayr, Mathews. Gare 

 Loch and Loch Goil, Peareey. 



A. Mackaii Holmes & Batt. t Robertsoni, nov. var. Loch 

 Banza, Arran, Robertson. This variety, which is the form found in 

 Skye, Orkney, and other parts of Scotland, differs from the typical 

 state of the species in the entire absence of air-vessels, the flattened 

 frond, and the very irregular branching. In fertile specimens the 

 receptacles are terminal on the ordinary branches, or, as in the typical 

 form, on lateral, deciduous shoots, borne near the base of the frond. 

 The plant grows in large tufts as big as a man's head, and nearly 

 globular; it has never been found attached to anything. I have 

 called the variety after Mr. David Robertson, who has done so much 

 to increase our knowledge of the marine flora of the Clyde sea-area, 

 and who alone has gathered this variety within its limits. 



Pel vet i a canaliculata Dene, et Thur. Heads of Ayr, Mathews. 

 Rothesay, King. Gare Loch, Peareey. 



Halidrys siliquosa Lyngb. Ardrossan, King. Loch Goil, Peareey. 



Rhodophyce^e. 



*Erythrotrichia carnea J. Ag. f. investiens Hauck. On Dietyota 

 dichotoma. Lamlash Bay. 



*Conchocelis rosea Batt.f Cumbrae. 



Porphyra ciliaris Crn. Between Saltcoats and Fairlie, Holmes. 



P. coccinea J. Ag. On Desmarestia aculeata. Farland Point, 



Cumbrae. 



P. leiwosticta Thur. Farland Point and Karnes Bay, Cumbrae. 

 Between Saltcoats and Fairlie, Holmes. 



P. laciniata Ag. f. iimbilicalis . Portincross, Holmes. Gare 

 Loch, Ardrossan, Rothesay, Loch Goil, &c. 



Wildemania rniniata Foslie. Off Hawk's Neb, Bute, in 74-10 



' w%/ » * xx '2 XVf 



fathom-water. 



W. rniniata Foslie, f. amplissima Foslie; *f. tenuissima Foslie ; 



f. typica Foslie. Cumbrae. Between Cumbrae and Little Cumbrae', 



Robertson. 



Chantransia secundata Thur. Karnes Bay. Between Saltcoats 

 and Ftiirlie, Holmes. Ardrossan, King. 



Xemalion lubricwn Duby. Portincross, Hohnes. 



Choreocolax Polysiphonia Reinsch. Great and Little Cumbrae. 

 Between Saltcoats and Fairlie, Holmes. 



Harveyella mirabilis Schmitz & Rke. Fairlie, King. 



t For a description and figure of this plant, see Phycological Memoirs, part i. 



