176 SYNOPSIS OF BRITISH SEAWEEDS. 



Jfah. On tli shore, a1 half-tide level. 



The greal Length of the joints readily distinguishes this 

 - from any other British marine ' 



318. litorea The shore Conferva)] filaments thick, rigid, crisped, 

 forming Loose, extensive bundles of a dull-green colour-, ar- 

 ticulations once and half as Long aa broad, here and there 

 swollen in pairs and discoloured, Harv. Man. ed. 2. p. 208. 

 (Atlas, PL LXVIII. Fig. 322.) 



Conferva Linum, Harv. 



Hab. In salt-water ditches near the coast; in estuaries, and along 

 the muddy sea-shore, between tide-marks. Annual. Sum- 

 mer. 

 This is the plant commonly found in British herbaria 

 under the name C. Linum, Br. FL, but which is very dif- 

 ferent from the plant so named by Roth, and has indeed 

 more in common with C. tortuosa, Dillw. Not having 

 been able to identify our British specimens with any Con- 

 tinental species, I have been forced to bestow a new name 

 on them. 



319. Linum (The pack- thread Conferva) ; filaments very thick, 

 of great length, light or dark green according to age, much 

 curled, rigid, forming loosely entangled, harsh strata ; articu- 

 lations as long as broad, Roth, Cat. Bot. v. l.p. 174, and v. 3. 

 p. 257. (Atlas, PL LXVIII. Fig. 323.) 



Conferva eapillaris, Huds. C. crassa, Ag. 

 Hab. In salt- water ditches, near the coast. 



The plant now figured is what, in British works, is 

 usually called C. crassa. On placing together under the 

 microscope specimens from several localities, there may 

 be observed minor differences between them, but all have 

 so many characters in common, that I consider it quite 

 inexpedient to propose more than one species. 



320. sutoria (The setaceous Conferva) ; filaments setaceous, ex- 

 tremely long, flexuous, equal, dark -green; articulations once 

 and a half as long as broad ; interstices pellucid, Berk. Gl. 

 Alg. t. 14./. 3. (Atlas, PL LXXII. Fig. 336.) 



Hab. Floating in ditches and pools, subject to the influence of 

 the tide. 

 I have been favoured by the Rev. M. J. Berkeley with 

 a portion of the specimen which he figured in the ' Glean- 

 ings,' when founding the present species, and it so nearly 

 resembles a plant which I have received from Mr. Kalfs, 

 that I have ventured to consider both as belonging to one 



