BANGIA. 217 



Phyc. Brit. t. xcii. ; Wijatt, Alg. Damn. No. 32. Ulva um- 

 bilicata, E. Bot. t. 2296. 



In the sea, on rocks, stones, &c., very common. Annual. Spring to au- 

 tumn. Fronds clustered, 4 8 inches long or more, very irregularly cleft, 

 often fixed by the centre, when dry transparent, very glossy and of a fine 

 purple. This and the following species constitute the Laver of many parts 

 of England, the Sioke or Slokaun of Scotland and Ireland. When stewed 

 for several hours they are reduced to a sort of pulp, which is brought to 

 table, served with lemon-juice, and is a favourite article of food with many 

 persons. 



2. P. vulgar is, Ag. ; frond simple, broadly lanceolate, the 

 margin much waved. Grev. Alg. Brit. p. 169 ; Hook. I. c. 

 p. 310 ; Harv. Phyc. Brit. t. ccxi ; also P. linearis, Grev. 

 Alg. Brit. p. 180, t. 18 ; Wyatt, Alg. Danm. No. 163. 



In the sea, on rocks, &c. with the preceding. Fronds 1 or 2 feet long, 

 and 2 or 3 inches wide, of a lanceolate figure, often much waved. Except 

 that the frond is undivided, this does not differ from the preceding. 



3. P. miniata, Ag. ; frond solitary, plane, oblong, gelati- 

 nous, rose-red. Hook. 1. c. p. 310. 



In the sea ; coast of Appin, Capt. Carmichael. " My only authority for 

 claiming this plant as a native of these shores, was a fragment found float- 

 ing in the sea. It was 3 inches in diameter, plane, curled on the margin, 

 of a bright sanguineous colour, extremely gelatinous and filled with close- 

 set roundish sporidia. When laid on paper to dry it, it dissolved into a 

 reddish sanies, being probably in a state of putrescence, and nothing 

 remained but a mere stain. From its texture and fructification, it evidently 

 does not belong to this genus." Carm. I know nothing of this plant. 



IV. BANGIA. Lyngb. [Plate 25, C.] 



Frond filiform, tubular, composed (in typical species) of 

 numerous radiating cellules, disposed in transverse rows, and 

 enclosed within a hyaline, continuous sheath. Spores purple 

 or green, one formed within each of the cells of the frond. 

 Named in honour of Hoffman Bang, a Danish botanist and 

 friend of Lyngbye. 



1. B. fmco-purpurea, Dillw. ; filaments elongated, capil- 

 lary, decumbent, nearly straight or somewhat curled, equal, 

 forming a brownish -green or purple stratum, glossy ; granules 

 few (about five) in each transverse line. Grev. Alg. Brit, 

 p. 177 ; Hook. Br. Fl. ii. p. 316 ; Wyatt, Alg. Danm. No. 

 167 ; Harv. Phyc. Brit. t. xcvi. Conf. fusco-purpurea, 

 Dillw. t. 92 ; E. Bot. t. 2055. Conf. atro-purpurea, Dillw. 

 t. 103; E. Bot. t. 2085. 



