Rosaceae: Rosoideae - drupelets
Drupelets are fleshy fruits that develop from the pistils of an apocarpous gynoecium. In each one the inner part of the ovary wall becomes hard and woody, while the outer part remains soft and may be invested with sugars and water, or with lipids. These nutrients may serve as food rewards for potential animal dispersal vectors, i.e. they may represent adaptations for endozoochory.
Flowers of Rubus (blackberries, raspberries, etc.) in Rosaceae
subfamily Rosoideae develop into aggregates of drupelets.
Rubus odoratus (flowering raspberry), flower and fruit (aggregate of drupelets).
Photo: R. Presgrave © 1998 Royal Ontario Museum (TRT 1913, 1916)
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