1016. The seed in contained in the pericarp, or seed-vessel, which is the germen when grown to maturity. The name of the seed-vessel varies according to its form, substance, &c.; but the word pericarp (peri, about, karpon, a fruit) is applicable' to all its varieties. The receptacle is the base or medium which connects the other parts of the fructification. The size, figure, form, texture, and condition of the surface of seeds afford characters of considerable service in distinguishing nearly allied species of plants; and characters extensively useful are derivable from their internal structure, particularly from the quantity and texture of the albumen or solid part of the seed, and the form and position, of the embryo.
