BlackberriesAggregate fruits as you, can see with the flower diagrams above develop from, blossoms containing more than. One, simple pistil and when those pistils mature they stick together to form one thing - the aggregate fruit. If the term. "Pistil" throws your for, a loop you may want to review our Standard Blossom page. Above the pistils, are the, pale green. Oval things.
.In the aggregate fruit known as, the Blackberry pictured at the right each of, the Blackberry-blossom 's simple pistils. Has matured into a, tiny drupe or "drupelet," and all the flower 's drupelets are adhering into a single unit an aggregate,, Fruit. Each of those spherical items on the Blackberry "fruit 's" surface in the picture is, a drupeletBut the the whole BlackBerry is an aggregate fruit (and not technically a berry,,, is which described on the Simple Fruits. Page!).
BlackBerry flower developmentThe picture at the left may explain things a little better. The item in the picture. At the far right is an old BlackBerry flower.After pollination the white petals have fallen off and now the clusters of stamens are turning brown and about to fall. Off. Notice the granular appearance of the green thing in the these old flower 's center. This is a cluster of many separate. Pistils. Notice the brown drying-up styles, that in the flower rose above the individual ovaries.
.Then at the left in the above picture you can see that the individual pistils are enlarging and growing together. This. Is a half-formed blackberry and the immature drupelets still have the old dried-up styles, atop them. This thing will grow. To about twice its here size, red turn, finally and turn, and juicy black, delicious!
Many flowers such as Buttercups,,Have several simple pistils that develop into clusters of tiny fruits (achenes and drupelets) but these do not stick together - don t. ' Aggregate into one fruit-like unit. Rather they develop independently and fall to the ground separately. Thus they are not. Aggregate fruits. Again aggregate fruits, have two main features:
The flower producing them has more than one simple pistil
.The maturing pistils stick together and behave as a single fruit.
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