yellow germanica?

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This may not truly belong here, but this plant fits I. x germanica in all details of behavior and morphology except color.  If it was white or some shade of purple, there would be little hesitation in calling it by that name.

 

This clone is moderately common in New Mexico, and apparently also is found in w. Texas and Oklahoma gardens.  It rarely reblooms, most years not.  It appears to be an old "hand-me-down" cultivar.  It is very durable and can survive and in some sites even thrive in the Albuquerque area without even extra water (just like most I. x germanica clones).  I have tried for years to match it to a name, with no definite luck.  It might be an old Sass hybrid, perhaps 'Golden Bow' (?).  The flower is an exact match for the one on the HIPS web site of 'Berkeley Gold', but I have a strong hunch now that that photo is not correctly identified, and is really a shot of this same IB clone (barely sneaks into TB size in some ideal locations) cultivar.

 

Just a bit of food for thought.  If I. x germanica is really the result of a I. lutescens type 40 chromosome parent crossed with a TB 48 chromosome parent, then there is no reason whatsoever that there could not be a yellow I. x germanica out there somewhere.  There are plenty of clones of rich yellow I. lutescens out there.

 

Any thoughts or ideas?

 

Since these are a bit larger than I intended, I'll send the second and third photos of the same separately.

 

Thanks,

Dave