Simple Fruits

Epigynous berries are simple fleshy fruit. Clockwise from top right: cranberries, lingonberries, blueberries red huckleberries.

Simple fruits can be either dry or fleshy, and result from the ripening of a simple or compound ovary in a flower with only one pistil. Dry fruits may be either dehiscent (opening to discharge seeds), or indehiscent (not opening to discharge seeds).[16] Types of dry, simple fruits, with examples of each, are:

achene – Most commonly seen in aggregate fruits (e.g. strawberry)
capsule – (Brazil nut)
caryopsis – (wheat)
Cypsela – An achene-like fruit derived from the individual florets in a capitulum (e.g. dandelion).
fibrous drupe – (coconut, walnut)
follicle – is formed from a single carpel, and opens by one suture (e.g. milkweed). More commonly seen in aggregate fruits (e.g. magnolia)
legume – (pea, bean, peanut)
loment – a type of indehiscent legume
nut – (hazelnut, beech, oak acorn)
samara – (elm, ash, maple key)
schizocarp – (carrot seed)
silique – (radish seed)
silicle – (shepherd's purse)
utricle – (beet)

Lilium unripe capsule fruit
Fruits in which part or all of the pericarp (fruit wall) is fleshy at maturity are simple fleshy fruits. Types of fleshy, simple fruits (with examples) are:

berry – (redcurrant, gooseberry, tomato, cranberry)
stone fruit or drupe (plum, cherry, peach, apricot, olive)

Dewberry flowers. Note the multiple pistils, each of which will produce a drupelet. Each flower will become a blackberry-like aggregate fruit.
An aggregate fruit, or etaerio, develops from a single flower with numerous simple pistils.

Magnolia and Peony, collection of follicles developing from one flower.
Sweet gum, collection of capsules.
Sycamore, collection of achenes.
Teasel, collection of cypsellas
Tuliptree, collection of samaras.
The pome fruits of the family Rosaceae, (including apples, pears, rosehips, and saskatoon berry) are a syncarpous fleshy fruit, a simple fruit, developing from a half-inferior ovary.

Schizocarp fruits form from a syncarpous ovary and do not really dehisce, but split into segments with one or more seeds; they include a number of different forms from a wide range of families. Carrot seed is an example.

Aggregate fruit
Main article: Aggregate fruit

Detail of raspberry flower
Aggregate fruits form from single flowers that have multiple carpels which are not joined together, i.e. each pistil contains one carpel. Each pistil forms a fruitlet, and collectively the fruitlets are called an etaerio. Four types of aggregate fruits include etaerios of achenes, follicles, drupelets, and berries. Ranunculaceae species, including Clematis and Ranunculus have an etaerio of achenes, Calotropis has an etaerio of follicles, and Rubus species like raspberry, have an etaerio of drupelets. Annona have Etaerio of berries.

The raspberry, whose pistils are termed drupelets because each is like a small drupe attached to the receptacle. In some bramble fruits (such as blackberry) the receptacle is elongated and part of the ripe fruit, making the blackberry an aggregate-accessory fruit.The strawberry is also an aggregate-accessory fruit, only one in which the seeds are contained in achenes. In all these examples, the fruit develops from a single flower with numerous pistils.

Dewberry flowers. Note the multiple pistils, each of which will produce a drupelet. Each flower will become a blackberry-like aggregate fruit.