A drupe has a stone in the center of the fruit which is its seed. Examples of drupes are olives and peaches. Pomes do not have a stone but have several seeds usually within a chamber. Examples of pomes are apples and pears. Indehiscent fruits are those which split open and release seeds when ripe.
Examples are buckwheat, corn and wheat.
The second category of simple dry fruit are dehiscent. These split open when ripe and release seeds. Examples are Redbud, Honeysuckle and Forysthia. Aggregate fruits are developed from a single flower with may ovaries. Multiple fruit is a classification of fruit with flowers that are separated but closely clustered such as in mulberry, fig and pineapple.