352 ALG.E CONFERVOlDEiE. [Conferva. 



at the joints; but without any sensible reduction of its diameter." 

 Carm. MSS. 



10. C. dissiliens, Dillw. (fragile Conferva); filaments elon- 

 gated straight very fragile slimy and gelatinous forming bright- 

 green floating masses, articulations half as long as broad. — 

 Dillw. Conf L 63, (not of E. Bot.) Ag. Syst. Alg. p. 90. 



In streams and ditches, not uncommon. — Articulations marked by a 

 green band, often separating pnd adhering at the angles. 



11. C. capillaris, Linn, (capillary Conferva); filaments pale- 

 green void of lubricity much curled and interwoven into sub- 

 rigid extensive strata, articulations 3—4 times longer than 

 broad.— C. crispa, Dillw. Syn. Conf p. 46. t. B — Prolifera 

 crispa, Vaucher Conferva capillaris, E. Bot. t. 2364. 



In streams and rivulets, in many places ; forming extensive strata, 

 many feet in diameter. In drying, the articulations are often, but not 

 invariably, alternately compressed. It does not adhere to paper. 



c. filaments forming crisped, entangled strata, green — growing in 

 the sea or in salt-water ditches. 



12. C. Linum, Roth, (flax-lihe Conferva); filaments thick 

 rigid crisped forming loose extensive bundles of a dull-green 

 colour, articulations once and a half as long as broad. — Ag. Syst. 

 Alg. p. 97. (according to specimens from that author,) 



In salt-water ditches, along the muddy sea-shore.— " Forming dis- 

 tinct, loosely interwoven, subcylindrical tufts, of a yellowish-green 

 colour, which, in a more advanced state, changes to a dark olive : 

 attached at one end and resting on the bottom of the pool. Filaments 

 as thick as those of C. area, rigid, brittle and variously curved. Arti- 

 culations filled with green matter, intermixed with large granules, irre- 

 gularly contracted and compressed in drying." Carm. MSS. 



13. C. crdsm, Ag. (thick Conferva); filaments very thick of 

 great length deep glossy-green much crisped rigid forming 

 loosely entangled harsh masses, articulations as long as broad. 

 —Ag. Syst. Alg. p. 99.— C. capillaris, Dillw. Conf. I. 9. 



In salt-water ditches, near the coast, in many places: very abundant 

 in the ditches by the North Wall, Dublin, W. H. Harvey— Filaments 

 many feet long, twice as thick as hog's bristles, remarkably rigid and fra- 

 gile when recent ; but soon becoming flaccid on exposure to the air. 



14. C. tortuosa, Dillw. (twisted Conferva); filaments rigid 

 slender much curled and twisted forming broad closely en- 

 tangled strata, articulations 2 — 3 times longer than broad. — 

 Dillw. Conf. t. 46. Ag. Syst. Alg. p. 98. 



In salt-water pools, and on marine rorks ; abundant. 



15. C. implexa, Dillw. (interwoven Coiferva); filaments very 

 slender capillary rather flaccid forming extensive much en- 

 tangled bright-green strata, articulations rather longer than broad. 

 —Dillw. Conf. Syn. p. 46. t. B. Ag. Syst. Alg. p. 91.— Intri- 



