Seb. MELANOSPERME/E. ( 43 ) Fam. LAMINARI^. 



Plate CXLVT. 

 ALARIA ESCULENTA.— 6^;m 



Gen. Char. — Frond stalked, flat, with a strong percni-rent cartilaginous midrib. Fructi- 

 fication consisting of cruciate, obcouical or pyriform tetraspores, forming a dense 

 sorus, in small accessory ribless leaf-like pinnee, attached to the upper part of the 

 stalk. Name from ala, "a wing." 



Alaria esculenta. — Frond much elongated, linear-lanceolate, with a 

 thick, filiform, elliptical, percuiTcnt midrib, continuous with the stem ; 

 accessory leaflets linear-obovate. 



Alaeia esculenta. — Grev. AJg. Brit. p. 25, t. 4; Hooh. Br. Fl. vol. ii. p. 271 ; 

 Wijatt, Alg. Danvi. No. 203 ; Post. <L' Rupp. p. 11, t. 17 ; Endl. 

 3rd Suppl. p. 28 ; Kiitz. Pkyc. Gen. p. 347, t. 32, f. 1 ; Harv. in Mack. 

 Fl. Hib. part 3, p. 171 ; Harv. P. B. plate 79 ; Harv. Man. p. 29 ; 

 Harv. Syn. p. 25 ; Atlas, plate 6, fig. 23 ; Harv. N. B. A. part 1, p. 88 ; 

 /. G. Agardh, Sp. Gen. Alg. vol. i. p. 143. 



Laminaria esculenta. — Lyngh. Hyd. Dan. p. 23 ; Ag. Sp. Alg. vol. i. p. 110 ; 

 Syst. p. 269 ; HooJc. Fl. Scot, part 2, p. 98 ; Grev. Fl. Edin. p. 282 ; 

 La Pylaie, Ann. Sc. Nat. vol. iv. p. 178, t. 9, f. D — F ; Spreng. 

 Syst. Veg. vol. iv. p. 326. 



Agakum esculentum. — Bory, Diet. Class. Nut. Hist. vol. ix. p. 191. 



Focus esculentus. — Linn. Mant. p. 135 ; Fl. Dan. p. 364 ; Syst. Nat. vol. ii. 

 p. 718; Gmel. Syst. Nat. vol. ii. p. 1389 ; Fl. Dan. t. 417; Lightf. 

 Fl. Scot. vol. ii. p. 938, t. 28 ; Huds. Fl. Angl. p. 578; With. Br. PI. 

 vol. iv. p. 93 ; Turn. Syn. Fuc. vol. i. p. 104 ; Turn. Hist. t. 117 ; 

 Eng. Bot. t. 1759 ; ^spcr, Ic. Fuc. vol. ii. p. 30, t. 126, 



FucDS fimlriatus. — Gmel. Hist. Fuc. p. 200, t. 29, f. 1. 



Fucus tetragonus. — Good, d: Woodw. in Linn. Trans, vol. iii. p. 140. 



Fucus teres. — Good, tfc Woodw. in Linn. Trans, vol. iii. p. 140. 



Fccus pinnatus. — Fl. Norv. vol. i. p. 96. 



Fuciis Scoticus lafissimus edulis dulcis. — Raii Syn. p. 46, n. 30. 



Hab. — On rocks and stones, at low- water mark. Perennial. Spring and winter. 

 Common all round the shores of Scotland, and north and west of Ireland. Cumberland, 

 Anglesea, Isle of Man, Durham and Northumberland ; not uncommon. North coasts of 

 Devonshire and Weymouth ; but rather rare, 



Geogr. Dist. — Common in the Arctic and Northern Atlantic Oceans; Iceland (Lynghy; 

 Northern Pacific ; Sitka ; Kamtschatka ; Atlantic shores of France [Lenormand). 



Description. — Root composed of strong branching fibres. Frond 

 three to four or even "twenty" feet in length. Stem cylindrical, three 

 to ten inches or more in length, and four to six lines in thickness, naked 

 when young, at length pinnated, especially near the summit, with small, 



