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A raspberry (and blackberry) is not a true berry. Instead one blackberry is actually comprised of many drupelets, and is technically an aggregate fruit.
Each incipient drupelet has its own stigma and good pollination requires the delivery of many grains of pollen to the flower so that all drupelets develop. Here's a well-pollinated blackberry photo from answers.com.
Here is a blossom from my blackberry bush.
Here's the above blossom again. Photo taken last week.
A drupelet is a botanical term for a fleshy fruit with a single stone enclosing the seed that does not split along defined lines to liberate the seed.
Each incipient drupelet has its own stigma and good pollination requires the delivery of many grains of pollen to the flower so that all drupelets develop. Here's a well-pollinated blackberry photo from answers.com.
Here is a blossom from my blackberry bush.
Here's the above blossom again. Photo taken last week.
A drupelet is a botanical term for a fleshy fruit with a single stone enclosing the seed that does not split along defined lines to liberate the seed.
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