Wisteria inquiry

Discussions of trees that have a form other than a single trunk and of woody vines.

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#1)  Wisteria inquiry

Postby Will Blozan » Sat Feb 12, 2011 2:56 pm

Hey ENTS,

I have a question about wisteria that hopefully Neil Pederson or Bruce Allen can help with.

I recently cut a wisteria vine that was strangling a client's tree. The client stated it had been in the tree as long as he could remember- perhaps dating to the 1950's. To me, the vine did not look that old- and based on its size and what that species is capable of- it appeared much younger.
               
                       
IMG_6128001.jpg
                       
Wisteria cross section
                       
IMG_6128001.jpg (52.6 KiB) Viewed 1397 times
               
               

Upon examination of the vine it initially looked like it was around six years old based on an unusual (and discontinuos) purple spiral that suggested growth rings. However, I shaved it down and looked at what appeared to be growth rings that were concentric and what I would expect a ring to look like.
               
                       
IMG_6131001.jpg
                       
Closer view of "rings"
                       
IMG_6131001.jpg (53.38 KiB) Viewed 1397 times
               
               

               
                       
IMG_6133001.jpg
                       
Another view of rings
                       
IMG_6133001.jpg (48.26 KiB) Viewed 1397 times
               
               

I counted these rings and came up with 145! What am I looking at here? The supporting tree was no where near 145 years old nor do I believe the vine was that old either. Nor do I think this vine is six years old- I have known the vine that long and encouraged the owner to cut it then. He didn't because it was a "family" legacy planted by his father.

????

Will

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#2)  Re: Wisteria inquiry

Postby Neil » Sat Feb 12, 2011 3:25 pm

hi Will,

Bruce would likely know better. But, as my students are so familiar with me saying, "it needs to be sanded more." it is hard to say anything until the the micro ring structure can be seen.

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#3)  Re: Wisteria inquiry

Postby Steve Galehouse » Sat Feb 12, 2011 5:48 pm

Will-

I think the vine had been twining around itself---the purple rings aren't growth rings, just continuous embedded bark in a spiral. Counting the growth rings between the two outermost purple margins should give a good approximation of age.

Steve
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#4)  Re: Wisteria inquiry

Postby Will Blozan » Sat Feb 12, 2011 6:26 pm

Neil,

How did I know that comment was coming???

Since the sample is wet I was able to shave it with a razor knife. Here are some macro shots- the best I could get with my camera.
               
                       
Pith and ring overview001.jpg
                       
Pith and ring overview
                       
Pith and ring overview001.jpg (66.2 KiB) Viewed 1378 times
               
               

               
                       
Pith and ring close001.jpg
                       
Closer view
                       
Pith and ring close001.jpg (88.66 KiB) Viewed 1378 times
               
               

               
                       
Ring overview001.jpg
                       
Ring overview
                       
Ring overview001.jpg (66.21 KiB) Viewed 1378 times
               
               

               
                       
Ring close001.jpg
                       
Rings and transition zone?
                       
Ring close001.jpg (85.65 KiB) Viewed 1378 times
               
               

               
                       
Ring zoom more001.jpg
                       
Macro of rings
                       
Ring zoom more001.jpg (94.4 KiB) Viewed 1378 times
               
               

               
                       
Ring zoom even more.jpg
                       
Max zoom
               
               

               
                       
Ring transition zoom001.jpg
                       
Transition zoomed in
               
               

               
                       
Tangential pith and ring001.jpg
                       
Tangential pith and rings
                       
Tangential pith and ring001.jpg (60.58 KiB) Viewed 1378 times
               
               


I hope this helps!

Thanks,

Will
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#5)  Re: Wisteria inquiry

Postby Neil » Mon Feb 14, 2011 8:12 am

hi Will,

How did I know that comment was coming???


Because i can be a ding-dang broken record? the new pix look great. looks like it falls in or near the ring-porous category, too. very neat.

i think Steve is on target by counting rings between the purple lines or embedded bark. do that in a couple of places and if you get a pretty consistent answer, you can likely feel pretty good about that. if you could crossdate and get exact ages.....[broken record]....

really neat stuff!

neil
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#6)  Re: Wisteria inquiry

Postby dbhguru » Mon Feb 14, 2011 9:07 am

Will,

  Hey Wisteria Vine Art! Cool!

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