White Vines

Woody vine covered with white-colored mildew?

I don’t often see woody vines with white-colored stems, but I did observe at least five or six on my amble through this bottomland hardwood stand today (8 Oct 2011).

            This vine stem has the “knobby knees” appearance of Ladies’ Ear-drops (Brunnichia cirrhosa), but I didn’t verify the identification.       

Closer view of mildewed (?) vine stem

On taking a somewhat closer view, it appears that the white coating may be some type of mildew.  I am not familiar with this phenomenon and thus don’t know what caused it, what environmental conditions it developed under, how common or rare it might be, or if it is or will be fatal to the vine.

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