The pericarp may be _fleshy and indehiscent_. A pulpy pericarp with several or many seeds is a =berry= (Figs. 239, 240, 241). To the horticulturist a berry is a small, soft, edible fruit, without particular reference to its structure. The botanical and horticultural conceptions of a berry are, therefore, unlike. In the botanical sense, gooseberries, currants, grapes, tomatoes, potato-balls, and even eggplant fruits and oranges (Fig. 241) are berries; strawberries, raspberries, blackberries are not. [Illustration: FIG. 242.--PLUM; example of a drupe.] A fleshy pericarp containing one relatively large seed or stone is a =drupe=. Examples are plum (Fig. 242), peach, cherry, apricot, olive. The walls of the pit in the plum, peach, and cherry are formed from the inner coats of the ovary, and the flesh from the outer coats. Drupes are also known as _stone-fruits_. [Illustration: FIG. 243.--FRUIT OF RASPBERRY.] [Illustration: FIG. 244.--AGGREGATE FRUIT OF MULBERRY; and a separate fruit.] Fruits that are formed by the subsequent union of separate pistils are =aggregate fruits=. The carpels in aggregate fruits are usually more or less fleshy. In the raspberry and blackberry flower, the pistils are essentially distinct, but as the pistils ripen they cohere and form one body (Figs. 243, 244). Each of the carpels or pistils in the raspberry and blackberry is a little drupe, or =drupelet=. In the raspberry the entire fruit separates from the torus, leaving the torus on the plant. In the blackberry and dewberry the fruit adheres to the torus, and the two are removed together when the fruit is picked. =Accessory Fruits.=--When the pericarp and some other part grow together, the fruit is said to be =accessory= or =reënforced=. An example is the strawberry (Fig. 245). The edible part is a greatly _enlarged torus_, and the pericarps are akenes embedded in it. These akenes are commonly called seeds. [Illustration: FIG. 245.--STRAWBERRY; fleshy torus in which akenes are embedded.] Various kinds of reënforced fruits have received special names. One of these is the =hip=, characteristic of roses. In this case, the torus is deep and hollow, like an urn, and the separate akenes are borne inside it. The mouth of the receptacle may close, and the walls sometimes become fleshy; the fruit may then be mistaken for a berry. The fruit of the pear, apple, and quince is known as a =pome=. In this case the five united carpels are completely buried in the hollow torus, and the torus makes most of the edible part of the ripe fruit, while the pistils are represented by the core (Fig. 246). Observe the sepals on the top of the torus (apex of the fruit) in Fig. 246. Note the outlines of the embedded pericarp in Fig. 247. [Illustration: FIG. 246.--SECTION OF AN APPLE.] [Illustration: FIG. 247.--CROSS-SECTION OF AN APPLE.]