See. MELANOSPERMEiE. ( 39 ) Fam. SPOROCHNOIDE.E. 



Plate CXLV. 

 SPOROCHNUS PEDUNCULATUS— ^^. 



Gen. Char. — Frond cylindrical, capillaceous, cellular ; cells of the axis minute, the rest 

 larger. Fructification : lateral stalked receptacles, terminated by a pencil of con- 

 fervoid filaments, and composed of vertical, radiating, and branching filaments, 

 bearing obovate spores. Name from o-Triifios-, "a seed," and x>'<^05^) "wool." 



Sporochnus pedunculatus. — Stem simple, perciirrent, with numerous 

 long simple branches. 



Sporochnus pedunculatus, — Ag. Sp. Alg. vol. i. p. 149 ; Sijst. p. 259 ; Grev. Alg. 

 Brit. p. 41, t. 6; Hooh. Br. Fl. vol. ii. p. 274; Wyatt, Alg. Danm. 

 No. 104 ; Endl. 3rd Suppl. p. 28 ; Kiitz. Phyc. Gen. p. 342 ; Harv. 

 in Mack. Fl. Bib. part 3, p. 173; Harv. P. B. plate 56 ; Harv. Man. 

 p. 25 ; Harv. Syn. p. 24 ; Atlas, plate 6, fig. 21 ; /. G. Agardh, Sp. 

 Gen. Alg. vol. i. p. 174, 



GiGARTiNA pedunculata. — Lamour. Ess. p. 48. 



Pucus pedunculatus. — Huds. Fl. Angl. p, 587 ; With. Br. PI. vol. iv. p, 120 ; 

 Stach. Ner. Brit. p. 110, t. 10; E. Bot. t. 545; Turn. Syn. vol. ii. 

 p. 367 ; Turn. Hist. t. 188. 



Hab. — On rocks, stones, shells, &c., near low-water and to a greater depth. Rare. 

 Annual. Summer and autumn. Eastern and southern coasts of England ; Anglesea {Rev. 

 H. Baviea) ; Frith of Forth {Mr. Hassell) ; Kirkwall, Orkney {Rev. Mr. Pollexfen) ; 

 Lamlash Bay, Arran {Major Martin) ; Bantry Bay {Miss Hutchins) ; Killiney {Dr. 

 Harvey) ; Belfast Bay {Mr. W. Thompson) ; Malahide and Roundstone Bay {Mr. 

 M'Calla) ; Jersey {Miss White). 



Geogr. Dist.— Atlantic shores of France ; British Islands. 



Description. — Root, a minute disc. Frond sis inches to a foot or 

 more in length, with a simple and percmTent main stem, furnished from 

 near the base with long simple branches, scattered, of nearly equal 

 length, except towards the summit, where they become shorter to the 

 apex ; all cylindrical, capillaceous, and everywhere abundantly sprinkled 

 with scattered receptacles, having sometimes a few even on the main stem. 

 Receptacles at first resembling minute sessile warts ; these soon elon- 

 gate, become oblong, shortly stalked, and are tipped with a pencil of 

 simple confervoid filaments ; the structure consists of vertical branching 

 filaments whorled round a fibrous axis, the branches of the filaments 

 being converted into obovate spores. Structure (of the frond) cellular, 

 about one-fourth of the diameter, of minute cellules, the remainder of 



