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