sentence1: The species was first formally described in 1846 by the botanist Johann Georg Christian Lehmann within the framework of Stephan Endlicher 's work `` Irideae Plantae Preissianae '' .
sentence2: The species was first formally described in 1846 by the botanist Stephan Endlicher as part of the work `` Irideae Plantae Preissianae '' by Johann Georg Christian Lehmann .