thoughts on Abies nebrodensis X umbellata - a true hybrid or not?

davidrt28 (zone 7)October 31, 2011

http://www.stanleyandsons.com/productDisplay.cfm?product=ABS%201550

Is there any record of it besides catalogs of Gee & Arrowhead Alpines? (who presumably get it from Gee) Stanley's comment implies they did not make the cross. It's not one of the old European hybrids like the tongue twister Abies X vasconcellosiana, that appear in some references.

I tried to "type it out" to the degree you can with a small plant. The only headway I could make was that A. nebrodensis is described as "blunt", A. umbellata/A. homolepsis as "sharp pointed". These needles don't appear pointed but a sharp tip can definitely be felt. The closest to the Japanese species I have is A. firma, which is visible pointed. (and actually double pointed if you look closely enough) So the intermediate character of this would at least not discourage the conclusion that it is a hybrid.

Here's a close up view (clickable because it's big, but you have to click again on the page this opens to see the full version):

Uploaded with ImageShack.us

My plant came from Gee. It is no doubt not on a rootstock that would work for me (i.e., either A. firma or A. nordmanniana) so I will have to coddle it and one day re-graft it myself. I think it's been started here previously that Gee graft on A. balsamea or A. concolor? I keep forgetting to call them.

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clement_2006

Impossible to identify by these photo,please post some of your plant.
But for me it's a doubtfull hybridation.
Clement

    Bookmark   November 1, 2011 at 2:59AM
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gardener365(5b Illinois USA)

Gee's uses Nordmann & Canaan.

Dax

    Bookmark   November 1, 2011 at 8:16AM
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davidrt28 (zone 7)

Thanks for the correction Dax.

    Bookmark   November 1, 2011 at 10:05AM
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davidrt28 (zone 7)

This one is on Canaan fir, unfortunately.
Because its own roots should be adequate for this area, I might try to air layer it this winter, or I should say this fiscal year! The bonsai people claim firs can be air layered, just that it might be incredibly slow. I want to use the one spare Abies firma rootstock I have for something else.

    Bookmark   November 1, 2011 at 4:48PM
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firefightergardener(7/8)

Same plant?

    Bookmark   November 1, 2011 at 7:34PM
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davidrt28 (zone 7)

Yes, it looks similar to me. Do you have enough species there that you can compare the needle tips? Your seem more visibly 2-pointed, but not as much as a for example a A. firma would appear. Do you have any pure A. nebrodensis?
In any case, thanks for posting.

    Bookmark   November 2, 2011 at 9:17AM
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