BANGIA. 217 



Phyc. Brit. t. xcii. ; Wj/att, Alg. Danm. No. 32. Ulva um- 

 hilicata, E. Bot. t. 2296. 



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

 tumn. — Fronds clustered, 4 — 8 inches lon<>' or more, very irregularly cleft, 

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

 purple. This and the follow in;j species constitute the Laver of many parts 

 of England, the Stoke 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. vulgaris, Ag. ; frond simple, broadly lanceolate, the 

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

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

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



In the sea, on rocks, t^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. niiniata, Ag. ; frond solitary, plane, oblong, gelati- 

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



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

 claiming this jdant 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 cidour, extremely gelatinous and filled witli close- 

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

 reddish sanies, being probably in a state of puuescence, 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. fasco-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. Damn. No. 

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

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

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



