318 ALGiE INARTICULATE. [Bryopsis. 



] . C tomentdsum, Stackh. (tomentose Codium) ; frond cy- 

 lindrical dichotomous. Grev. Alg. Brit. p. 185, t. 19. — Spon- 

 godium to??ient., Lamour. — Fucus tomentosus, Huds. — Turn. Syn. 

 Fuc.p. 300, Hist. Fuc. t. 135. E. Bot. t. 712. 



On rocks in the sea, chiefly on the extreme southern shores, and 

 there abundantly. Coast of Durham, and Yorkshire, probably rare. 

 Iona, Rev. M. J. Berkeley. Staffa, and Southwest of Ireland, Mr. 

 Harvey. It. Summer. 



2. C. Bursa, Ag. (Pouch Codium) ; frond sphaerical hollow. 

 Ag. Sp.Alg. v. 1. p. 457. Grev. Alg. Brit. p. 186. — Spongodium 

 Bursa, Lamour. — Fucus Bursa, Turn. Hist. Fuc. t. 136. 



Submarine rocks, rare. Sussex, (" Pallas,") Cornwall, Mr. liashleigh. 

 Devonshire, Mrs. Griffiths. Near Belfast, Mr. Templeton. 



52. Bryopsis. Lamour. Bryopsis. 



Frond membranaceous, filiform, tubular, cylindrical, glisten- 

 ing, branched; the branches imbricated, or distichous and 

 pinnated, filled with a fine green minutely granuliferous fluid. 

 Grev. Alg. Brit. p. 187. t. 19. — Name, (3gvov, a moss, and 

 6>\p/?, an appearance ; — resembling some of the feathered mosses. 



1. B. plumosa, Ag. (feathered Bryopsis) ; frond filiform 

 branched naked below, the branches scattered spreading twice 

 or thrice pinnated, the pinnse pectinated. Ag. Sp. Alg. v. I. p. 

 448. Grev. Alg. Brit. p. 187. t. 19 — B. Lyngbxjei, Fl. Dan. t 

 1063. Lyngb. Hydroph. Dan. p. 75. t. 19. — B. composita, Ag. 

 Sp. Alg. v. 1. p. 45 1 . ( Grev.)-<- Ulva plumosa, Huds. — E. Bot. 

 t. 2375. 



Rocks, stones and Algae, in the sea, on various coasts of Eng- 

 land, Scotland and Ireland. 0. Summer and Autumn. — This graceful 

 plant, of a delicate green colour, is liable to much variation in size and 

 ramification, and in the situation of the pinnae and pinnules, which are 

 sometimes opposite and sometimes alternate; hence Agardh's B. com- 

 2)osita> &c, and a Bryopsis, without name, thus characterized in Capt. 

 CarmichaePs MSS., " fronde 4— pinnata, pinnis pinnulisque alternis in- 

 ferne nudis." 



2. B. hypnoides, Lamour. (Hypnum-lihe Bryopsis); frond 

 slender very much branched, the branches long, the ramuli 

 capillary irregularly inserted somewhat erect, the lower ones 



elongated. Grev Lamour. Journ. Bot. 1809. p. 135. t. l.f.2. 



B. Arbuscula, Ag. Sp. Alg. v. I. p. 451. 



On rocks and stones in the sea, Scotland. Southerness, Kirkcud- 

 bright, Sir William Jardine, Bart. Prestonpans, Dr. Greville. Appin, 

 Capt. Carmichael. 0. Summer and Autumn. — I have given this, 

 (which Dr. Greville is by no means convinced is not a mere variety of 

 the preceding, depending for its character upon the nearly erect irregular 

 ramuli,) as a native of Appin, on the authority of Capt. Carmichael's 

 MSS., where he distinguishes a Bryopsis, " filis ramosissimis, ramis 

 imbricatis apicem versus ramulis erectiusculis plerumque simplicibus 

 undique obsessis." 



