Okay, I'm answering my own post, lol! Pretty sure this is the lovely heirloom 'Florence Vaughan'.

http://www.karcheskycanna.net/florencevaughn.html

Patty,

The cultivar
you pictured is definitely a lovely heirloom variety. Unfortunately many canna
cultivars from the past were renamed for reasons that are difficult to
understand in this age of instant communication. Many of these renamed
cultivars persisted in the trade for the past 50 years or more.

The valid
name for your cultivar is Canna ‘Roma’ and no you will not likely find it
listed by any current grower here in the states. It was introduced by Sprenger
in about 1898.

The original
(valid) cultivar Canna ‘Florence Vaughn’ was actually a yellow with many red
dots on the flower bloom with green foliage. https://en.wikipedia.org/wiki/Canna_%27Roma%27

Your canna
is also sold under the name of Canna ‘Yellow King Humbert’. This name is also
invalid but has persisted for 40 to 50 years here in the U.S.

https://www.cannas.net/index.cfm/fuseaction/plants.plantDetail/plant_id/11/index.htm

With the
above in mind you may wish to look for the C. Yellow King Humbert and compare
to the one you see or check with Alice at Karchesky.

http://garden.org/thread/view/32392/Canna-Identification/

Best,

Kent

Thank you, Kent. I also found Yellow King Humbert, and you're correct, this is the cultivar (although misnamed). And so sad I cannot find 'Roma', I like it very, very much. I'll check with Alice to see if they will have this (along with 'Cleopatra') for next season. I'm re-doing a south facing bed at my house, and it will be filled with several tropical gingers, heliconias and cannas. With a couple of Solo papayas in the back, and a few philodenrons for some green. A nod to to Oahu, Hawaii. My second most favorite place besides where I live :-)

Patty S.

Patty,

For clarification
purposes; you will be getting the original Canna ‘Roma’ if you are able to
purchase the misnamed cultivar Canna ‘Florence Vaughn’ or Canna ‘Yellow King
Humbert’ from the above sources listed in the links.

Canna ‘Roma’
does exist but is sold under the different names. Please be sure to check for
virus infection in any cultivar purchased.

Kent

Thanks, Kent. You suggest checking for virus infection if I purchase any cultivar. What are the signs and symptoms of this virus? Gosh, seems like we have something affecting about every nice plant specimen these days, sigh.

Patty S.

Thanks, Kent. I've spent some time doing just that - Googling - and have looked at numerous photos. I think I'm pretty clear on what to watch for. In fact, going out tomorrow to check my own cannas, just to make sure I don't have anything infected in my own yard. I want to do some more investigation to see what the vector is or means of transmission, with regard to spreading the virus. I'm a Master Gardener and a nurse, so have a pretty good eye. And appreciate the suggestions on how to purchase clean specimens. I've had quite the (quick) education on cannas. I just love them, and very sad to see this. They grow so well out here in my neck of the woods with little to no care.

Patty S.

That is one beautiful canna. Can you ask your friend for a division?

Popmama, because she is such a lovely, generous person, she is sending me one in the fall. And, I'll send her a division of one of my cannas in return. But, we're now going to make sure ours are disease-free for sure.

Patty S.

That's a beautiful friendship!