Posted by Gus on 3/24/2009, 6:43 pm, in reply to "Re: E. glaucescens x perriniana vs E. perriniana (fruit photo comparison)"
83.42.153.85
Oh well I have both species in the yard growing healthy, and I am stubborn enough to cross them if a back-up photo is needed to compare! 
Only problem is it would take some... time.
So maybe it is better if Manu can clarify:
If the apparent E. perriniana trait he observed in his first E. glaucescens planted 2002 (the juvenile leaves "encircling" the stems) meant:
A) That each pair of juvenile leaves encircled the stem by overlapping at their base (so, 2 leaves existed in each node, but the base of one of them was over the base of the opposite leaf so being 2 separate leaves but looking like 1)
or
B) That each pair of juvenile leaves encircled the stem totally because they were fused by the base (so, 2 leaves existing in each node, but the bases of both being physically joined as if it was just 1 leaf). An example of that fused juvenile leaf is visible in the E. perriniana pic I posted in this same thread.
I assumed it was the later case when thinking of "E. x glauco-montana". But after seeing the 2003 tree pic here, I am not sure of which case it is.
It looks somewhat alike to the "normal" E. glaucescens (which would also be understandable in a hybrid case anyway). At some early foliage stage the pairs of leaves did indeed "overlap" in my trees. But they were never fused. That is the key point to confirm, without close-up pics of juvenile foliage.
Also, if some keen soul can produce a good E. glaucescens fruit pic and post it around here, I'll make a triptic with the three images (pure E. perriniana, pure E. glaucescens, and suspected hybrid) and we can compare better!
"Hybrid discovery" should be confirmed as much as possible by visual comparison before taking firm conclusions 
Unless you have DNA analysis tools at home 
Whatever it is, it is looking very nice, and I have seen Manu "swimming" over the frozen pond of his yard this last winter! In his location this tree should be somewhat "bullet-proof".
