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Key to Vanilla
https://fsus.ncbg.unc.edu/main.php?pg=show-key.php&keyid=39542
1 Vines leafless or with only a few leaves on newest growth (the leaves caducous); leaves < 8 cm long, much shorter than the internodes); stems 3-9 mm in diameter. | |
1 Vines leafy, the leaves persistent at many nodes; leaves > 10 cm long, almost as long as to longer than the internodes; stems 2-15 mm in diameter. | |