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Mark Steinmetz sampler (8/33)

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Thigmotropism. Tendrils of the vine Frost Grape (Vitis vulpina) clasp and coil around the stem of a tall herbaceous plant, Joe Pye Weed (Eupatorium purpureum). The coiling growth response to a touch stimulus is known as thigmotropism.
Thigmotropism. Tendrils of the vine Frost Grape (Vitis vulpina) clasp and coil around the stem of a tall herbaceous plant, Joe Pye Weed (Eupatorium purpureum). The coiling growth response to a touch stimulus is known as thigmotropism.
Filename: thigmotropism.jpg
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