Ser. GONGYLOSPERME.^. ( 59 ) Fam. CEYPTONEMTACEiE./ii / 



5" ^ ^•^ <fV^, 



GIGARTINA TEEDll.—Lauwur. 



Gen. Char. — Frond cartilaginous, filiform, compressed or flat, consisting of two strata ; 

 inner of longitudinal, interlacing and anastomosing filaments ; the outer of 

 vertical, dicliotomous, articulated filaments, loosely imbedded in a firm jelly, the 

 apical joints of which are minute, moniliform, coloured, not branching, parallel 

 and firmly cohering. Fructification of two kinds, on distinct plants : 1. "External 

 tubercles, containing on a central placenta dense clusters of spores (favellidia), 

 held together by a network of fibres" (Harv.) ; 2. Tetraspores, "scattered among 

 the filaments of the periphery," or collected into immersed sori. 



GiGARTiNA Teedii. — Frond cartilagineo-membranaceous, flat, linear, 

 closely and repeatedly pinnated; pinnsB and pinnules very irregular, 

 opposite or alternate, distichous and horizontal ; ultimate ramuli short 

 and spine-like. 



GiGARTiNA Teedii. — Lamour. Ess. p. 49, t. 4, f. 11 ; ffooL Br. Fl. vol. ii. p. 301 ; 

 Wyatt, Alg. Damn. No. 27 ; Endl. 3rd Suppl. p. 42 ; /. G. Agardh, 

 Sp. Gen. Alg. vol. ii. p. 266 ; Harv. P. B. plate 266 ; Harv. Man. 

 p. 140 ; Harv. Syn. p. 114 ; Atlas, plate 44, fig. 201. 



Chondracanthus Teedii. — Kutz. Phyc. p. 399. 



Rhodtmenia Teedii. — Grev. Alg. Brit. p. 96. 



SpHiEROcocciTS Teedii. — Ag. Sp. Alg. vol. i. p. 277; Ag. Sysf. Alg. p. 225; 

 Grev. Crypt. Fl. t. 356. 



Fucus Teedii.— Moth, Cat. Bot. vol. iii. p. 108, t. 4 ; Turn. Hist. Fuc. t. 208. 



Hab. — On rocks at the extreme of low-water mark. Perennial. Very rare. Elberry 

 Cove, Torbay {Mrs. Griffiths, 1811). 



Geogr. Dist. — Atlantic coasts of France, Spain, and Portugal ; Mediterranean Sea, 

 abundant. 



Description. — Root, a small conical flattened disc. Fronds much 

 tufted, two to five or six inches long, with a roundish or ovate outline ; 

 the principal stem one to one and a-half, or even three to four lines 

 in breadth, three to four times pinnated ; pinnae and pinnidsc distichous, 

 irregularly alternate or opposite, pinnulse very close and patent, mostly 

 horizontal, all the divisions more or less set with latei'al spine-like, 

 simple or compound ramuli, mostly acute but occasionally obovate or 

 spathulate, all of very uneqiial length, from that of a minute spine, not 

 more than half a line long, to that of a branch two to three inches, 

 frequently forked at the extremities, attenuated at the base, and 

 the apices much acuminated to an obtuse point. Structure com- 

 posed of two kinds of jointed filaments, those in the centre composing 



