On Sun, 19 Jul 2009 16:05:52 GMT, "brooklyn1"
> wrote:

>Blackberries and black raspberries are synonymous, they're a cultivar of the
>same plant, same as red raspberries, purple raspberries, yellow
>raspberries... there are hundreds of varietals/hybrids.
>
>http://en.wikipedia.org/wiki/Blackberry

Not so. Blackberries and black raspberries are both forms of Rubrus.
But, simply because the names are used interchangeably in some areas
doesn't alter the fact that they are definitely different.

If you want a more technical read:
http://www.botany.com/rubus.html

Ross.