j 
Ser. CHLOROSPERME. Fam. Ulvacee : 
2 
Puate XCVI. 
BANGIA FUSCO-PURPUREA, Zyngé. 
Gen. Cuar. Frond filiform, tubular, composed of numerous radiating cel- 
lules, disposed in transverse rows, and enclosed within a hyaline conti- 
nuous sheath. Spores purple or green, formed within each of the 
cells of the frond. Baneta (Lyngb.),—in honour of Hofmann Bang, 
a Danish botanist, and friend of Lyngbye. 
Baneta fusco-purpurea ; filaments elongated, simple, decumbent, nearly 
straight, here and there constricted, forming a brownish-purple, glossy 
stratum ; granules several in each transverse band, dark purple. 
Banera fusco-purpurea, Lyngb. Hyd. Dan. p. 83. t. 24. Grev. Fl. Edin. 
p- 302. Spreng. Syst. Veg. vol. iv. p.361. Grev. Alg. Brit. p. 177. Hook. 
Brit. Fl. vol. ii. p. 316. Wyatt, Alg. Danm. no. 167. Harv. in Mack. Fl. 
Hib. part ii. p. 241. Harv. Man. p.172. J. Ag. Alg. Medit. p. 14. Kitz. 
Phyc. Gen. p. 249. Chauv. Mém. sur Bangia, Recherches, p. 35. 
BanGta atro-purpurea, 4g. Syst. p. 76. 4g. Ic. Alg. Eur. t.25. Endl. 3rd 
Suppl. p.18. Kiitz. Phyc. Gen. p. 250. 
Baneta versicolor, Kiitz. J. c. p. 250. t. 45. f. 3. 
ConFERvA fusco-purpurea, Dillw. Conf. t.92. E. Bot. t. 2055. 
ConFERVA atro-purpurea, Roth. Cat. Bot. vol. iii. p. 208. t. 6. Dillw. Conf. 
t.103. #. Bot. t. 2085. 
Has. On rocks and planks in the sea, within the tide range (also in fresh- 
water rivers and canals). Common on the shores of England and 
Treland, in many places. Rare in Scotland? Frith of Forth, Prof. 
Arnott. Jersey, Miss White. 
Geogr. Distr. Atlantic Shores of Europe, from the Feroe Islands to France. 
Mediterranean Sea. 
Descr. Fronds fixed by their base, aggregated into widely spreading patches, 
several inches in diameter, capillary, from one to three or four inches in 
length, decumbent, or floating in the water, very flaccid, glossy and lubri- 
cous, some of the threads of much greater thickness than others. Threads 
cylindrical, composed of radiating, obconical cellules disposed in circles 
round a narrow central tube, and contained within a pellucid sheath; these 
circles of cells, closely piled on each other, constitute the frond. Each cell 
contains a dark purple mass of endrochome, which finally is compacted into 
a spore, and discharged, on the rupture of the parent cell, into the tube. 
awe 
The genus Bangia, founded by Lyngbye, in honour of his 
friend and preceptor in Phycological studies, has, owing to its 
originally vague definition, been more than usually unfortunate 
in having intrusive species placed in it ; as well as having a great 
- 
9B2 
