'Martha Brown' as you can see from the bee visiting one of it's blossoms, is a small double flowered upright fuchsia. Sometimes the form attributed to a fuchsia flower can be confusing. Most of the time you will only see three forms listed: single, sem-double, and double. But then there are the super tiny flowers on minutiflora and mircophylla, the little flowers on Lycioides and the magellanicas, the really big single flowers on Cardinal, etc. etc.
So just because a flower is listed as a double, doesn't mean it is going to be a huge blossom with lots of petals. And it seems like the real grey area is with the semi-doubles. I don't know how many times I have seen a flower listed as a single, when it obviously has more petals than a single but not as many as most doubles. And a flower listed as a semi-double, which to me, simply looks like a large single.
'Martha Brown' did very well in this summers heat wave and we will see how she does compared to Gordon's China Rose. The two are very similar so far.