94 ACOfYLEDONS. ALG.. FllCUS. 



2. F. lacciferus, stem cylindrical filiform bipinnate, branches al- 

 ternate mostly simple, leaves linear serrated, vesicles sphierical 

 on cylindrical petioli. Turn. Hist. Fuc. t.4j. E. B. t. 1967. 



HAB. Occasionally wafted to the Scottish shores, probably from the 

 American seas. Mr. P. Neill has seen a specimen from Orkney. 



3. F. granulatuSy stem covered with elliptical knobs, branches 

 filiform repeatedly pinnated, spines numerous scattered, vesi- 

 cles elliptical innate moniliform, tubercles either scattered over 

 the branches or collected into a lineari-subulate terminal re- 

 ceptacle. Turn* Hist. Fuc. t. 251. 



P. concatenalus, vesicles elliptical distinct all arranged in a mo- 

 niliform manner, tubercles collected into linear-acuminated re- 

 ceptacles. Turn. F. concatenatus, Lightf. p. 923. 



HAS. /3. Coast about Leith and Newhaven : a fragment was commu* 

 nicated to Mr. Lightfoot by Mr. Yalden. 



Colour olive brown ; 6 inches to 1 foot or more long. 



4. F. Mackaii, frond coriaceous filiform^ rounded dichotomotis 

 the extremities obtuse, vesicles scattered innate with the frond 

 elliptical solitary broader than the frond* Turn* Hist. Fuc* 

 t.52. E.B.t.1927. 



HAB. Gathered many years ago in Loch Seaforth by the late Lord 

 Seaforth, in whose collection at Brahan-castle I saw it in 1808; 

 Loch Coul and Kyle Scough, Sutherland, abundant^ Mr. Borrer 

 and Hook. Shores of Arasaig, Mr. Borrer. 



Five to 9 or 10 inches high. Fructification unknown. 



5. F. siliquosus, stem coriaceous compressed linear branched pin- 

 nated like the branches with distichous alternate compressed 

 petiolated jointed linear-lanceolate vesicles, leaves placed near 

 the base distichous alternate flat linear entire, receptacles 

 placed near the apices distichous alternate compressed linear- 

 lanceolate pedunculated. Turn. Hist. Fuc* t. 159. Lightf* 

 p. 922. 



p. smaller. 



HAB. Rocky shores,, but not very frequent, Lightf. Rare about the 



Firth of Forth. /3. Sea-shore at Caroline Park, Maugh. 

 One to one foot and a half long ; about 6 inches in /3.> which has 



more abundant receptacles and fewer vesicles. 



6. F. nodosus, frond coriaceous compressed veinless subdichoto^ 

 mous branched in a pinnated manner^ vesicles innate inflated^ 

 receptacles distichous large pedunculated roundish pyriform 

 mostly solitary. Turn. Hist. Fuc. t. 91. E. B. t. 570. Lightf, 

 p.9\S. 



HAB. On rocky shores, common. 



From 2 to 4 or 6 feet long. This is said by Mr. Turner to be pre- 

 ferred in the Hebrides to all other Fuci in the manufacturing of 

 kelp, and passes there under the name of Kelp-wrack. 



7. F. vesiculositSy frond coriaceous flat with a central rib linear- 

 dichotomous quite entire, vesicles sphserical innate in the mem- 



