Given the number of sisters, and they few we have seen, it may be a little presumptuous to assume they are ALL fruit-related.
Maybe there are veg and pulses and nuts too!
(Cos they all seem a BIT nuts!?) :)
I finally decided to show up in here, and Joe spoiled my dissenting fun. :-P
We know that Melon has one sister named Lemon, and so naturally we assume that all 2048 must be named after fruits. When it could even be that the only ones named after fruits are those two.
Or there could be a scheme based on foods. Or colours. Or their most prominent characteristic, whatever that is. Or they could all just have five-letter names. Or...
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Given the number of sisters, and they few we have seen, it may be a little presumptuous to assume they are ALL fruit-related.
Maybe they are all combinations of E, L, M, N and O , and the fruit is just a coincidence?
Yes, or that!
(https://imgs.xkcd.com/comics/extrapolating.png)
Using my limited ability with search engines and atrocious typing skills I have come across the following in the X, Y, Z range of fruits.
Yangmei
Yantok
Yardlong bean
Yellow buckeye - ineddible
Yellow granadilla
Yellow mombin
Yellow oleander - poisinous
Yellow plum
Yew cones with seeds unremoved - no eat with seed or else end up killdead
Youngberry
Yuzu
Zig-zag vine fruit
Zucchini
Zwetschge
I included legumes and the like since they are technically part of the plants fruiting bodies that are consumed
I would like to add to the list in no particular order
Sweet Pea
Currant - Black, Red and white though red is my fave and my bushes are ready for harvest early this year. :-D(https://james-mcintyre.co.uk/wp-content/uploads/2018/08/Redcurrant_Laxton-500x500.jpg)
Mulberry because as kids we feasted on these every summer and our tree was HUGE with MASSIVE fruits, no little thanks to being within a few yards of the compost heap in the corner of the garden.
(https://images-na.ssl-images-amazon.com/images/I/512NX%2BkRePL.jpg)
Tangential thought
Tomato is really into roleplaying games and usually plays The BARD
D&D Stats Explained With Tomatoes
Strength is being able to crush a tomato.
Dexterity is being able to dodge or juggle a tomato.
Constitution is being able to eat a bad tomato.
Intelligence is knowing a tomato is a fruit.
Wisdom is knowing not to put a tomato in a fruit salad.
Charisma is being able to sell a tomato based fruit salad.
A tomato based fruit salad would simply be salsa.
GUYS WE FOUND THE BARD!
Now can anyone come up with a third fruit that also only contains the required letters? The only other anagram of lemon I can think of is monel, which is a high strength corrosion resistant alloy of nickel and copper. Perhaps not a bad name for an AI, but maybe a less ditsy one than the Lemon/Melon clan appears to be.
I would picture Monel as the mighty sailor of the group.
(https://vignette.wikia.nocookie.net/gilligan5935/images/0/08/G11.jpg/revision/latest/scale-to-width-down/250?cb=20140414200030)
"False fruit" must be like a botanists' secret handshake - it's how they recognize one another in crowds.
Do not click if humor impaired.
Laypersons think they're talking about a straight guy trying to pass as gay.