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Scaphosepalum zieglerae is described from a small area near Chical in northern Ecuador. It is distinguished by the large plant, waxy yellow flowers densely spotted with brown red to blood-red, spiky tails of the lateral sepals and a dark blood-red, wingless lip. It is here compared to Scaphosepalum beluosum with which it shares most similarities, and to S. fimbriatum, another species with fimbriated sepaline tails.
Luis E. Baquero (Fri,) studied this question.