Is it possible (maybe not probable) for members of different plant families to cross pollinate?

One being Caryopteris × clandonensis (bluebeard bush, a flowering shrub) and antirrhinum (snapdragons, an annual). The families are Plantaginaceae and Lamiaceae respectively. Basically, I have a bluebeard bush and snapdragons in the same bed. Both flowered last year. I let the snapdragons reseed themselves into the bed. This year, I have many plants in this bed that seem to be a cross of these two plants: they are coming up with leaves that are the exact same yellow color and serrated shape as the leaves of the bluebeard bush, but are on stems with the same leaf layout patterns as the snapdragons. I first thought they were some sort of weed. If it is a weed, I have never seen its like before and it is found no where else on my property other than the bed with the bluebeard and the snapdragons. Most of my snapdragons have not yet flowered - so I don't know what kind of flowers these will have, if inded they have any.

Is it possible (maybe not probable) for members of different plant families to cross pollinate?
It is very unlikely that you can cross them due to a great genetic distance.





One is an annual and the other a woody plant and the resulting cross would be very biochemically unstable.





However, special scientific labs may remove a desirable gene from plant a, and insert it in place of an undesirable gene on plant b.





An american elm tree with african frog genes exists..... heres the link to the article... its on page 3, second to last paragraph.





http://www.boston.com/bostonglobe/ideas/...
Reply:Caryopteris = Verbenaceae


Antirrhinum = Scrophulariaceae





And no, I don't think that's possible.

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