3. Laminaria.—Sea Girdles or Tangles.
3. LAMINARIA.—SEA-GIRDLES or TANGLES. From Lamina'ria digita'ta Lamouroux. A dark-spored seaweed having a ribless expansion resembling a leaf-blade. The stipitate portion has been used in gynecology as a substitute for sponge in making sponge tents for dilating the cervical canal. Contains salts, mucilage, and mannite; the latter principle is especially prominent in another species—Laminaria saccharina—like the above, abundant on the sea-coast.