<i>Roscoea procera</i>, as this plate is labelled, is now <i>R. purpurea</i>, not "purpurata", according to Cowley, E.J. (1982), "A revision of Roscoea (Zingiberaceae)", <i>Kew Bulletin</i> 36 (4): 747–777
"Image courtesy Missouri Botanical Garden. <a rel="nofollow" class="external free" href="http://www.botanicus.org">http://www.botanicus.org</a>".
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Plantae Asiaticae Rariores  Wallich