1'bcamium.] ALG.E RHODOSPERME.E. 195 



vaguely pinnated with segments of the same form ; the margin 

 (and often the disk) beset with subulate, often cirrhose ciliae, in 

 which both capsules and granules are produced ; root fibrous, 

 creeping. Hook. Br. Fl. v. ii. p. 291.^. jubatus. Grev. 

 Crypt, t. 359. 



On rocky shores, in gravelly or shelly places. Bantry bay ; Miss 

 Hutchins. West of Clare, common ; W. H. Harvey. The capsules, 

 which are very rare, I was fortunate enough to gather in abundance at 

 Miltown Malbay, in the summer of 1831. Fronds 48 inches high, 

 dull pale red ; ciliae often 56 inches in length. 



6. R. palmafa, Grev. Dulse or Dillisk. Frond coriaceous 

 or submembranaceous, broadly wedge-shaped, much and irre- 

 gularly cleft, segments subdichotomously divided ; margin en- 

 tire (often winged with proliferous leaflets); granules distributed 

 over the whole frond in cloud-like spots. Hook. Br. Fl. v. ii. 

 p. 29l t Fucus palmatus. E. Bot. t, 1306. 



Rocky shores, very abundant. Fronds "2 18 inches long, of a livid 

 purple colour. Weil known to hawkers and schoolboys under the 

 name of Dulse or Dillisk ; and eagerly collected by the poor on the 

 coast as an agreeable esculent. It is similarly used in most of the 

 northern countries of Europe. 



7. R. sobolifera, Grev. Proliferous Rhodomenia. Frond 

 membranaceous, shortly stipitate ; stem filiform, dividing into 

 branches, which expand into flat, dilated fronds, much deeply 

 and irregularly cleft ; the segments linear, wedge-shaped, laci- 

 niated at their apex. Grev. Hook. Br. Fl v. ii. p. 292. Turn. 

 Hist. t. 45. E. Bot. t. 2133. 



On Laminaria dirjitata and on rocks. Glenarm ; Dr. Drummond. 

 4 6 inches long, cleft into many laciniated, linear, wedge-shaped seg- 

 ments. Very nearly related to R. palmata, from some varieties of 

 which I find it sometimes dificult to distinguish it. 



8. R. reniformis, Hook. Kidney -shaped Rhodomenia. Stipes 

 short, cylindrical, simple or branched, suddenly expanding into 

 a carnoso-membranaceous, roundish, subsimple or irregularly 

 cleft (occasionally proliferous at the margin), somewhat lobed 

 frond ; capsules and granules scattered. Hook. Br. Fl. v. ii. 

 p. 292. Iridcea reniformis, Bory. Grev. Alg. Brit. Fucus 

 reniformis. Turn. t. 113. E. Bot. #.2116. 



Sea-shores, rather rare. Bantry bay ; Miss Hutchins. Miltown 

 Malbay and Kilkee ; W. H. Harvey. Mouth of the river Bann ; 

 Mr. D. Moore. Fronds 2 8 inches long, fine red, soft, roundish, 

 occasionally beset at the margin with proliferous lobes of similar 

 form. 



39. PLOCAMIUM. Lamour. Plocamium. 



Frond filiform, compressed, between membranaceous and car- 

 tilaginous, fine pink red, much branched, branches distichous, 



