298 ALGJE INARTICULATE. [Gigartina. 



tinous tubular constricted as if jointed much j and irregularly 

 branched, branches generally bearing whorls at the constric- 

 tions, capsules sphaerical with a pellucid border. — Gastridium 

 haliforme, Lyngb. — Grev. Alg. BriL p. 117. — Chondria kali- 

 formis, Ag. Sp. Alg. v. 1. p. 355. — Gigartina kaliformis, La- 

 mour. — Fucus kaliformis, Good, et Woodw. in Linn. Trans. 

 v. 3. p. 206. t. 18. E. Bot. t. 640. Turn. Syn. Fuc.p. 377, 

 Hist. Fuc t. 29. 



In similar situations and on the same coasts with the preceding. © . 

 Summer. 



4. C. pdrvula, (least Chylocladia') ; frond with scattered en- 

 tangled branches, the constrictions nearly equal in length and 

 breadth, capsules ovate containing a sphserical mass of wedge- 

 shaped seeds. — Gastridium parvidum, Grev. Alg. Brit. p. 119. 

 — Chondria parvula, Ag. Sp. Alg. p. 207. Grev. Crypt. Fl. 



v. 6. t. 346 Fucus kaliformis, y. nanus, Turn. Hist. Fuc. v. 1. 



p. 67. 



Parasitic on the larger Algae. Coast of Devon, Mrs. Griffiths. 

 Brighton, Mr. Borrer. 0. Summer.— 2— 3 inches long. Distinguished, 

 according to Dr. Greville, from C. kaliformis, of which it will be seen 

 that Mr. Turner makes it a variety, by the ovate capsules, destitute of a 

 pellucid border. Mrs. Griffiths observes that its fructification is pro- 

 duced a month later. 



5. C. articuldta, (articulated Chylocladia); frond tubular con- 

 stricted throughout as if jointed much branched dichotomous and 

 whorled subfastigiate, articulations subcylindrical, capsules ur- 

 ceolate. — Gastridium articulatum, Grev. Alg. Brit. p. 120. — 

 Chondria artic, Ag. Sp. Alg. v. 1. p. 357. — Lomentaria artic, 

 Lyngb. — Gigartina artic, Lamour. — Fucus artic, Lightf. — Turn. 

 Syn. Fuc.p. 383, Hist. Fuc t. 106. E. Bot.t. 1574. 



On rocks and the larger Alga?, on most of the British shores. 0. 

 Summer. — Three and four inches to a foot in length, in some of Miss 

 Hutchins' specimens from Bantry; and varying much in the thickness of 

 the frond ; the whole jointed in a catenulated manner. " There is not 

 much," observes Captain Carmichael, " in the definition to distinguish 

 this species from C. kaliformis, though, to look at them beside each other 

 we should pronounce them at once to be distinct. Lyngbye has fallen 

 upon an ingenious contrivance to avoid the confusion that might take 

 place from too near an approximation of them. He has erected the latter 

 into a separate Genus; nor only that, he has transferred it into a dif- 

 ferent section under the idea of the frond being solid, which assuredly 

 it is not, at least in this part of the world." Carrn. 



34. Gigarti'na. Lamour. Gigartina (Gigartina and Gracilaria. 



Grev.). 



Frond more or less cartilaginous, filiform, cylindrical or 

 compressed, irregularly branched, of a dull red colour. Fruc- 

 tification ; — capsules containing a mass of minute roundish seeds; 

 and (in many of the species, perhaps in all) roundish or oblong, 



