Ser. Meianosperme-B. Tarn. Fueea. 



Plate LXXVIII. 



HIMANTHALIA LOREA, L yng b. 



Gen. Char. Frond top-shaped. Receptacles very long, strap-shaped, re- 

 peatedly forked, springing from the centre of the frond, filled with 

 mucus traversed by jointed fibres, and pierced by numerous pores, 

 which communicate with immersed spherical conceptacles, containing 

 either parietal spores, or (in distinct individuals) antheridia. Himan- 

 thalia [Lyngb.) — from ipas, a strap, and 6d\os, a branch (or aks, the 

 sea.) 



Himanthalia lorea ; frond top-shaped, at length cup-shaped, stalked ; re- 

 ceptacles repeatedly dichotomous, tapering more or less at the apex. 



Himanthalia lorea, Lyngb. Hyd. Ban. p. 36. t. 8. Grev. Fl. Edin. p. 285. 

 Gaill. in Did. Sc. Nat. vol. 53. p. 357. Grev. Alg. Brit. p. 20. t. 3. Hook. 

 Br. Fl. vol. ii. p. 269. Wyatt, Alg. Damn. no. 3. Harv. in Mack. Fl. Hib. 

 part 3. p. ]70. Harv. Man. p. 22. Kutz. Phyc. Gen. p. 351. Endl. 3rd 

 Suppl. p. 29. 



Fucus loreus, Linn. Syst. Nat. vol. ii. p. 716. Gm. vol. ii. p. 1382. Huds. 

 Fl. Aug. p. 583. Light/. Fl. Scot. p. 920. Fl. Dan. t. 710. With. Ar. 

 vol. iv. p. 96. Stack. Ner. Brit. p. 37. t. 10. E. Bot. t. 569. Turn. Syn. 

 Fuc. vol. ii. p. 246. Hist. t. 196. Lamour. Ess. p. 19. Ag. Sp. Alg. 

 vol. i. p. 98. Ag. Syst. p. 280. Spreng. Syst. Veg. vol. iv. p. 316. 



Fucus elongatus, Linn. Sp. PI. vol. ii. p. 1627 (excl. syn. Moris). Syst. 



vol. ii. p. 716. Gm. vol. ii. p. 1381. Gm. Hist. Fuc. p. 103. (excl. syn. 



Huds.). 

 Fucus longo angusto crassoque folio, Raii. Syn. p. 43. n. 11. 

 Fucus fungis affinis, Raii. 1. c. p. 43. n. 15. 



Hab. On rocky sea shores, near low water mark. Annual ? "Winter and 

 spring. Common. 



Geogr. Distr. Atlantic shores of Europe from Iceland (Mohr.) to Portugal 

 (Broiero). Eastern coast of North America. 



Descr. Root scutate Fronds tufted, when young narrow obconical, gradually 

 becoming wider above, and finally being top-shaped, depressed in the 

 centre, with an expanded circular rim, thus becoming slightly cup-shaped, 

 or pezizaeform. Receptacles springing from the centre (i.e. the apex) of the 

 cup-like frond, varying in length from two to ten, or according to some 

 authors, to twenty feet; from a quarter to half an inch in width, compressed, 

 linear, repeatedly dichotomous, tapering at the apices into more or less 

 acute points. Internally these receptacles are filled with a watery gelatine, 

 traversed by confervoid filaments. Their outer coat is firmly cellular, and 

 pierced by numerous pores beneath each of which is formed a small sphe- 

 rical chamber or conceptacle. The fructification is dioecious. In some 

 individuals the conccptacles contain tufts of antheridia, attached to branching 

 lUaments, similar to those of Fucus. In others they contain, immersed 



