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A Field spotter's Guide to Australian Finger lime Cultivars

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pagnr:
I collected wild Finger Lime seed from Nth NSW, one orange fruited one green fruited. I grew those seeds and the fruiting plants were identical to the parent, except slight differences in fruit size                ( but not skin and pulp colour ).
As far as see it, seed would be true to type, except for the fact that Finger Lime seed sellers often grow the plants in multi variety collections or plantations, so cross pollination is more likely than with the isolated wild plants I found.
Also some of the prized varieties have more complex skin pulp pigment colour combinations, so pigment variable offspring could be more likely.
( plus X pollination on top of that too ).
If a particular Finger Lime plant produces pigmented fruit, attractive to birds or animals to spread the seed, it doesn't make much sense for the plant to produce wildly different coloured fruit that may be less attractive than the parent.
I think if you could get  isolated non X pollinated seed of Finger Lime varieties, it is more likely they will be true to the parent. There are still other factors to think about like fruit setting ability etc. The whole package is probably only available by grafting.
As far as I know all existing C.australasica Finger Lime varieties are wild collected and none have bred by deliberate cross pollinating.

tru:
very interesting! I had no idea they were common enough in the wild that you could just go and find them, but yeah it makes sense that grafting is probably the only way. I wish I could go out and hunt fruit, mushrooms are about the only thing I can confidently find here (IDing is a different story)

pagnr:
The area that Finger Limes grow was discussed over on the Citrus General Discussion.

https://tropicalfruitforum.com/index.php?topic=48658.msg469956#msg469956

Wild Finger limes grow from Ballina on the coast in NSW, up to the Gold Coast area in QLD. That is about 115 km.
I used to live in NTH NSW and occasionally found them, They are more common in certain spots in their range.
They are easier to find around the Mt Tambourine area and around there

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