I'd say it's absolutely
not A. saximontana (other than possibly a distant hybrid)... not that I'm any expert but this much I can tell from reading the info posted by Mark and Panayoti at the NARGS site:
https://www.nargs.org/forum/north-american-columbines-starting-aquilegia-saximontanaFrom that info,
A. saximontana has short, divergent spurs - they spread apart from the base of the flower - that are
not particularly hooked (compared to the usual imposter,
A. flabellata and hybrids thereof, which has strongly hooked, curling-in spurs).
Again, no expert here, but I don't think it's
Aquilegia jonesii either, again, from the strongly hooked spurs, compared to the photos shown in the same thread linked above.
A. jonesii appears to have short, somewhat divergent straight-ish spurs with a bit of a knob on the ends. Can't tell the scale from the photo - the leaves should be miniscule, and ruffled. (I only have 2-3 year old seedlings that are supposed to be
A. jonesii - no blooms yet, if ever - but I'm amazed at how tiny the leaves are).
So, some hybrid at best, I'd venture. Anyway, hopefully someone who knows a lot more about it will comment shortly!