Task: Explanation
Input (English): Swainsona is a large genus of flowering plants native to Australasia. There are 85 species, all but one of which is endemic to Australia; the exception, "S. novae-zelandiae", occurs only in New Zealand. Question: To which taxonomic category do both Swainsona and Olsynium belong? Answer: genus
Output (English): Swainsona is a large genus of flowering plants native to Australasia.