Jay,
Just a couple of quick corrections for that table… ‘Brace #1’ is/was a selection from Don Compton of Marengo IN… the material tested may have come from me, or someone I shared scionwood with at some time after Don shared it with me.
‘Keener’ has often been alleged to be a D.v.XD.k. hybrid, bred by Luther Burbank, but Jerry Lehman went over Burbank’s notes with a fine-toothed comb, and found no indication that he was ever able to successfully hybridize the two species. There is really nothing about ‘Keener’ that makes me think that it is anything other than a decent D.virginiana, and I’ve never seen conclusive evidence that it even originated with Burbank.
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