potato vine

noun
1.
a tender, woody Brazilian vine, Solanum jasminoides, of the nightshade family, having starlike, blue-tinged white flowers in clusters, grown as an ornamental.

Origin:
1765–75

Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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WordNet
potato vine

noun
1. vine of Costa Rica sparsely armed with hooklike spines and having large lilac-blue flowers 
2. copiously branched vine of Brazil having deciduous leaves and white flowers tinged with blue 
WordNet® 3.0, © 2006 by Princeton University.
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Example sentences
Measurements on a potato vine in which the leaves were all exposed to the sun are shown by the dots.
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