Found this information on another forum and wonder if it is a real thing or a hoax?
For me the fruit is too large for Dunstan citrumelo, approaching the size of Morton citrange.

I don't believe it is Dunstan. Byron the owner is a good guy & wouldn't try to mislead anyone.

According to their book it came to them from an unheated greenhouse in Rhode Island. Pretty sure they don't know the actual parentage. I've had one for a few years that was grafted, but no flowers yet. It's a bit over 5' tall. Looking forward to fruit so that I can compare it to Morton. I hope it's not...Morton is pretty rough tasting. Their taste description makes it seem like it can't be Morton, but everyone's tastes do differ. Leaves look more like my Dunstan than my Pumello x Poncirus, but not a dead wringer for either.

Personally, I have never tasted anything that was crossed with Poncirus trifoliata that tasted good enough to eat. There is a reason that not a single Poncirus hybrid have never made it to commercial use - Millet

I agree, unless you have no taste buds that is.

Or you live in Maine and are super desperate!!!
I know, Millet, that's no real excuse, is it!

I also have this citrumelo, although mine is a rooted cutting and from the sound of it is much smaller than Greg's. I've often wondered what it really is and where it came from too.

Newport RI has many old Great Gatsby-esque mansions with large manicured grounds which often include greenhouses.
You can even go visit some of them, like Blithewold (http://www.blithewold.org/) which is just down the road from Newport in Bristol RI. The greenhouse there has several citrus... but nothing really unusual.


If I recall correctly, I believe the large citrus on the left is a Ponderosa Lemon.


I wonder if there are any greenhouses on the old estates in that area, which still hold exotic plant treasures that once belonged to the rich and famous of the 1920's.

I believe I have one of these X breeds. The leaves are substantially larger than any other trifoliate X's that I have. Mine is in a pot and hasn't flourished - though I want to get it in the ground in the shortly and I suspect the tree will be happier.

I got my specimen about 5 years ago from Stan McKenzie.


Greg

Thank you Laaz, that is what I suspected for some time.
It is amazing how many people believe that citrumelo without off-flavors exists.

My Dunstan hasn't produced fruit yet, but I ate one of G's. Eating the sections like a grapefruit wasn't great, but was edible. Juicing the Dunstan and making "grapefruitaide" was very acceptable. I'd gladly drink that.

As for the comparison to Morton, unfortunately I don't have a Morton tree for the comparison.

GregN, this citrumello from Logee's is different from Stan's, leaves are noticeably different shaped and sized.

Hi Ivica,

what about Trifolis? Bernhard Voss says it tastes nice -nearly like common grapefruit. It seems -like Citsuma "Prague" to be an old Soviet creation.

Roberto,
What is Trifolis? I haven't heard of it and was wondering what it's lineage is.
Thanks,
Greg