Direction of vine winding

[Ian Staples]

hernlem at chess.ncsu.edu (Brad Hernlem) writes:


>I have noticed while walking through woods near my home that almost
>universaly the vines wind around the trees in a left-handed helix. My question:
>is this a manifestation of external factors or is the winding direction
>inherent in the vine. The left-handed helical trend would be in agreement with
>the hypothesis that the vines have a tendency to follow the sun. Similar vines
>growing in the southern hemisphere should wind with right-handed trend, if
>this were true.

Perhaps it's just another manifestation of the plug-hole phenomenon?

Cheers,  Ian S.

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