Plant ID forum: Just dug this up.

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Name: Greene
Savannah, GA (Sunset 28) (Zone 8b)
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greene
Apr 11, 2014 9:08 PM CST
I have no idea what this is. I just dug it up today. Confused

The only plant which had been grown in this location for 4 years was the wild grape vine which I removed last fall. Today I dug a hole getting ready to install a new plant and thought I hit a root. I did hit a root, but this large 'thing' was growing around a smooth, reddish color root.

I am calling it 'alien white yam' for now (there are no yams of any kind growing in my yard). The outside looks like tree bark, the inside looks like white styro-foam. It got broken by the shovel so it's in pieces. Reassembling the pieces, it's at least 11 inches long and measures 12 inches around the fattest part. I do not see any type of roots or 'hair' growing on it.

Any clue?

Thumb of 2014-04-12/greene/d91cac Thumb of 2014-04-12/greene/8a60c7
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Thumb of 2014-04-12/greene/cad27c[/lightbox ][lightbox]2014-04-12/greene/c39f61

Sunset Zone 28, AHS Heat Zone 9, USDA zone 8b~~"Leaf of Faith"
Name: Carole
Clarksville, TN (Zone 6b)
Cherish today
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SongofJoy
Apr 12, 2014 2:47 AM CST
Could it be a root fungus of some kind?
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Name: Janet Super Sleuth
Near Lincoln UK
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JRsbugs
Apr 12, 2014 6:02 AM CST
Armillaria Root Rot?

http://pnwhandbooks.org/plantdisease/grape-vitis-spp-armilla...

http://iv.ucdavis.edu/Current_UC_Viticulture_Research_In-Pro...
Name: Ursula
Fair Lawn NJ, zone 6b
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Ursula
Apr 12, 2014 6:58 AM CST
Could it be a Slime Mold?
Name: Lin
Florida (Zone 9b)
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plantladylin
Apr 12, 2014 9:16 AM CST
It looks like Armillaria Root Rot to me also:

http://www.clemson.edu/extension/peach/afg_columns/avoiding_...

http://www.plantpath.cornell.edu/Trees/Armillaria.html

http://www.forestryimages.org/browse/detail.cfm?imgnum=03640...
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Name: Greene
Savannah, GA (Sunset 28) (Zone 8b)
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greene
Apr 13, 2014 3:22 PM CST
After digging farther along I found 3 more sections of root involved; altogether about 3 feet of the root was surrounded by this stuff.

Well, I guess this must be the Armillaria Root Rot attacking the roots of some tree which had been removed several years ago.
Thanks for everyone who chimed in.

I will mark this solved.
Sunset Zone 28, AHS Heat Zone 9, USDA zone 8b~~"Leaf of Faith"
Name: Jacquie (JB) Berger
Wrightstown, New Jersey (Zone 6b)

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JB
Apr 13, 2014 3:27 PM CST
I think it is an alien and they are growing underground and will attack when they have enough white stuff......Greene.

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