Fu'cus vesiculo'sus, F. serra'tus, F. nodo'sus, or F. siliquo'sus, Fucus Bladderwrack, N.F. -- The dried thallus with not more than 3 p.c. of foreign organic matter, yielding not more than 4 p.c. of acid-insoluble ash; Atlantic Ocean; grows on muddy rocks and often floats to the shore. It is 1M. (3 degrees) long, or less, .5-4 Cm. (1/5-1 3/5') broad, dichotomously branched, brownish-black, whitish incrustation, flat, smooth, entire or serrate, with or without stout midrib, with or without oval air-vesicles, single or pairs, apex of thallus occasionally swollen, numerous conceptacles; odor strongly seaweed-like; taste saline, nauseous. Powder, reddish-brown -- polygonal and elongated cells, pseudoparenchyma with thick mucilaginous walls; solvents: water, diluted alcohol; contains organic matter (mainly mucilage with little mannite (fucose), fats, etc., 62 p.c., volatile oil (trace), moisture 22 p.c., ash 2.5-20 p.c. -- K, Na, chlorides, bromides iodides, phosphates, sulphates. Alterative; obesity, enlarged glands, goiter. Dose, 3ss-2 (2-8 Gm.); 1. Fluidextractum Fuci (75 p.c. alcohol), dose, 3ss-2 (2-8 cc.); Decoction, 5 p.c., 3j-2 (30-60 cc.); Extract (alcoholic), gr. 5-10 (.3-.6 Gm.).