Beginner Gardening: Rudbeckia/black-eyed susans, 1 by DaleTheGardener

DaleTheGardener wrote:
There are common names, like Black-eyed Susans.

And there are botanical names, like Rudbeckia.

Rudbeckia is the genus name, then they have a second name like Rudebeckia hirta, and they sometimes they are a variety name like 'Prairie Sun'.

Conflowers are Echinacea, Rudebeckia (your black eyed susans probably) and many other flowers have both common and botanical names. Takes time to learn the difference.

Wikipedia may help http://en.wikipedia.org/wiki/Botanical_name explain it better.