Photograph from the first publication of <i>Solanum sanchez-vegae</i> <a href="https://en.wikipedia.org/wiki/Digital_object_identifier" class="extiw" title="w:Digital object identifier">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.1371%2Fjournal.pone.0010502.g004">10.1371/journal.pone.0010502.g004</a>
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Knapp S (2010) Four New Vining Species of Solanum (Dulcamaroid Clade) from Montane Habitats in Tropical America. PLoS ONE 5(5): e10502. <a href="//doi.org/10.1371/journal.pone.0010502" class="extiw" title="doi:10.1371/journal.pone.0010502">doi:10.1371/journal.pone.0010502</a>