RHODYMENIA. 127 



6. R. jubata, Good, and Woodw. ; frond thickish, flaccid, 

 sub-cartilaginous, dull red, linear-lanceolate, much attenu- 

 ated or cirrhous at the apex, vaguely pinnated with segments 

 of the same form ; the margin (and often the disk) beset with 

 subulate or filiform cilia, in which both tubercles and tetra- 

 spores are produced on distinct plants ; root fibrous, creep- 

 ing. Grev. Alg. Brit. p. 91 ; Hook. Br. FL ii. p. 291 ; Wyatt, 

 Alg. Danm. No. 18 ; Harv. Phyc. Brit. t. clxxv. Sph. ju- 

 batus, Grev. Crypt, t. 359. 



On rocky or gravelly shores in tide-pools. Annual. Producing fruit in 

 summer. Frequent. Root a mass of creeping fibres, from which spring 

 several fronds. Fronds rising with a short cylindrical stem, linear-lance- 

 olate, attenuate, vaguely pinnated, all the branches attenuated at base, 

 and drawn out at the apex into long, filiform points, the margin and disk 

 more or less densely clothed with linear, filiform cilia, which, in some va- 

 rieties, are very much elongated and again branched, when the frond is 

 resolved into a dense entangled mass of cylindrical fibres. Substance car- 

 tilaginous, soft and flaccid. Colour a dull pinky red. Tubercles hemi- 

 spherical, placed on the cilia ; tetraspores transversely zoned, confined to 

 the cilia, minute. A very variable plant closely allied to the preceding, 

 from which it differs in the softer and more flaccid substance, different co- 

 lour, and especially in the granular fructification, and in producing its 

 fruit at a different season. 



7. R. palmata, L. ; frond coriaceous or sub-membraua- 

 ceous, purple, broadly wedge-shaped, much and irregularly 

 cleft, segments sub-dichotomously divided ; margin entire, 

 (often winged with proliferous leaflets); tetraspores distri- 

 buted over the whole frond in cloud-like spots. Grev. Alg. 

 Brit. p. 93 ; Hook. Br. Fl. ii. p. 291 ; Wyatt, Alg. Danm. 

 No. 110; Harv. Phyc. Brit. t. ccxvii. ccxviii. F. palrna- 

 itis, E. Bot. t. 1306. &. Sarniensis ; frond thinner, laciniated, 

 the segments very narrow. Grev. F. Sarniensis, Mert. 

 Turn. Hist. t. 44. y. Sobolifera ; frond stipitate, membra- 

 naceous, the branches very narrow below, much divided, 

 expanding upwards into wedge-shaped, jagged and laciniate 

 lobes. Harv. Phyc. Brit. t. ccxviii. jig. 2. R. sobolifera, 

 Grev. Alg. Brit. p. 95 ; Harv. Man. ed. 1, p. 63 ; E. Bot. t. 

 2133. 



In the sea, on rocks and the stems of Laminaria, very common. Fronds 

 2 20 inches long, tufted, of a broad wedge-shape, but very irregular in 

 division, sometimes palmate, sometimes more or less dichotomous, and 

 sometimes cleft into numerous jagged branches. Substance, when young, 

 membranaceous, afterwards leathery. Colour a dull purplish or brownish 

 red. This is the Dulse of the Scotch, Dillisk of the Irish, and is much 

 eaten in both countries, as well as in most of the northern states of Europe, 

 by the poor along the shores, and is transmitted as an article of humble 

 luxury over most parts of the country. It is generally eaten raw, either 



