I just finished a bag of these mandarins for the first time. They're small (1.5" across), seedless, juicy, thin skinned, easy to peel, and are really sweet. Definitely worth a try if you've not experienced them before. The trees they grow on are small too judging by the picture on the page.

From what I managed to find using Google, the name of this variety is Citrus kinokuni (Tanaka).
(Description) http://www.rickharrison.com/texts/info/mandarins.html

Evidently, they must be imported from China (as almost every thing is these days), I have never heard of the variety. However, there is such a large number of citrus varieties available these days it is becoming unmanageable - Millet

According to the label they're from "Nanfeng county of Jiangxi province" in China. I decided to post this because it appears to be a rather obscure variety. This document says there are three forms of this citrus. The one on UCR's Mandarin Collection page (under Kishu) doesn't look like the one I tried; they didn't have the prominent neck and were much lighter in color.

Millet, this discussion brings up an interesting question: Are foreign citrus fruits such as this one barred from entering citrus-producing states in your country to prevent the transmission of disease?

Junglekeeper, I am not sure, however, when all the proper safety procedures are carried out I would think that the fruit could be sold in the citrus producing states of the USA. I would think certain varieties of citrus such as, navels, clementines, tangelos, from South Africa, Chile and Australia, are being sold in all 50 US states. Doctor Malcolm Manners would certainly know the answer to your question. - Millet

I can tell you that mandarins from So Africa, clementines from Spain and key limes from Mexico are available here in Florida, since I have recently bought them. So like Millet said, as long as they go through proper inspections and treatments fruits seem to be imported from a number of different countries.

Skeet

Thanks for the info, skeet. It's fortunate that they're not banned; it would be ironic indeed if while living amongst acres and acres of citrus one is deprived of variety because of a preventative measure.

It's ironic that most of the fresh eating oranges in Florida are from California. Nearly every orange grown in Florida (95 percent) are processed for juice. - Millet

I think the only Florida grown citrus I have bought recently were the Valencia oranges. For sure the majority of citrus I have bought is from outside FL

Skeet