316 ALGjE INARTICULATE. [Bangia. 



cum Ic. — Solenia percursa, Ag. Syst. Alg. p. 187. — Scytosi- 

 phon compressus, y. co?ifervoideus, Lyngb. Hydroph. Dan. p. 65. 

 t. 15. /. B. 4—6. 



On the oozy sea-shore, above the half-tide level, and giving it a green- 

 ish hue to an indefinite extent. Appin, common. Carm. 0. Spring and 

 Summer. — This appears to me to be a very dubious species of En- 

 teromorpha. 



50. Bangia. Lyngb. Bangia. 



Frond flat, capillary, membranaceous, of a green, reddish or 

 purple colour. Fructification ; granules arranged more or less 

 in a transverse manner. Grev. Alg. Brit, p. 177. — Named in 

 honour of Hoffman Bang, a Danish Naturalist and Author of a 

 work entitled " Be usu Confervarum in CEconomia Natural' 

 — The proper place of this Genus is very doubtful. Most Bo- 

 tanists arrange it with the Confervoidece, whence Dr. Greville 

 has removed it and brought it near to Ulva, on account of its 

 plane (though very narrow and filamentous) fronds. Mr. Har- 

 vey would rather follow Agardh, referring it to an Appendix 

 of the Oscillatoriece, or to a family immediately after them. 



1. B. fusco-purpurea, Lyngb. (brownish-purple Bangia); 

 elongated simple, filaments purple or brownish -purple, often 

 subtorulose straightish, granules about 5 in each fascia. Lyngb. 

 Hydroph. Dan. p. 83. t. 24. Grev. Alg. Brit. p. 177 — x. fus- 

 cescens. Conferva fusco-purpurea, Dillw. Conf. t. 92. E. Bot. 

 t. 2055. — (3. purpurea. Bangia atro-purpurea, Ag. Syst. Alg. 

 p. 76. — Conferva atro-purpurea, Both, Cat. Bot. v. 3. p. 208. t. 6. 

 Dillw. Conf. t. 103. E. Bot t. 2085. 



On rocks and wood in the sea, about high-water-mark: — «• Dunraven 

 Castle, S. Wales, Mr. Young. — £. Chiefly in the south of England and 

 Ireland. Meadfoot, Devon, Mrs. Griffiths. Within the Citadel, Ply- 

 mouth, Mr. Sconce. Firth of Forth, Dr. Greville. 0. Spring, Sum- 

 mer. — One to 3 or 4 inches in length. The var. /J., of a rich and deep 

 purple colour, is by far the most common with us. 



2. B. cilidris, (fringed Bangia); filaments gregarious very- 

 minute simple straight compressed purple, granules binate glo- 

 bose. Carm. 3ISS. cum Ic. 



On the old leaves of Zostera marina, Appin, Cajriain Carmichael. 

 0. Spring. — This, the minutest of all the Bangice, "grows on the 

 edges of the leaves in the form of a delicate pink-coloured fringe. Fila- 

 ments half a line in length, gelatinous, straight, compressed, rather toru- 

 lose. Granules large, globular, arranged in pairs." Carm. — The granules 

 are occasionally in a single series, when the filaments are only half their 

 usual breadth and the plant becomes a Splicer oplce a of Agardh {Harvey). 



3. B. Lamindria?, Lyngb. (Laminaria Bangia); filaments 

 simple csespitose equal olive-green, granules minute arranged 

 in a double series of about 4. — Lyngb. Hydroph. Dan. p. 84. 

 £.24. 



