Task: Explanation
Input (English): Olsynium (huilmo in Chile; formerly part of "Sisyrinchium") is a genus of summer-dormant rhizomatous perennials in the iris family, native to sunny hillsides in South America and western North America. Question: To which taxonomic category do both Swainsona and Olsynium belong? Answer: genus
Output (English): Olsynium huilmo in Chile; formerly part of Sisyrinchium is a genus of summerdormant rhizomatous perennials in the iris family, native to sunny hillsides in South America and western North America.