Hi everyone,
I'm positive that the Golden Queen of Taiwan is not the Ivory of Thailand. I have eaten the Golden Queen in Thailand many times and it is never as slim/narrow as an Ivory. Funny thing when fruits are imported to other countries their original/names names are usually lost. Not always, though >> Nam Doc Mai, etc.
The Ivory is probably not called "Ivory" in Thailand (at least as far as I have seen). Mangoes in Thailand have Thai names, so I'm pretty sure I've eaten an Ivory over the course of a year there (mango binge for the entire time!) but I just didn't know it.
The Golden Queen on the other hand, is labeled as "Taiwan mango" in upscale Paragon-International Market, in Bangkok. The fruit tag on the mangoes have "Golden Queen" written on them in impossibly small letters. The fruit tree nurseries in Chatuchak have the Taiwan mango labeled as "Kim Hong, Jing Hwong, Jin Hwang" probably because the Thai language is phonetical, with complex tones, and with an even more complex alphabet-- which does not transfer over to English easily. Adding to the confusion, the Taiwanese keep improving their strains of Golden Queen mangoes via annual mango competitions, and have read of several improved strains grown locally in Taiwan. This is all, of course, IMHO and experience.
I do have two seedlings of the Golden Queen BUT sorry to report that they are most certainly monoembryonic in every instance I have seen (around 12 seedlings total grown in Thailand) and under my local conditions, the seedlings struggle a bit. Low/moderate anthracnose resistance but very vigorous. Mine were both stunted severely by grubs recently. Heaven weeps.... Now I am trying to initiate multi-rootstock to increase vigor... I just started with them, so we will see what I have in a few years... or maybe 20?
Greenthumb on eBay sells Golden Queen (or something very very similar) from time to time... Taiwan mango...Kim Hong.. Jin Hwang...Jin Hwong... who knows what is being sold by who anymore? I kid..LOL