Task: Explanation
Input (English): Decumaria, the woodvamps, is a genus of two species of flowering plants in the family Hydrangeaceae, one ("D. barbara") native to the southeastern United States, and the other ("D. sinensis") native to central China. Question: Is the plant Decumaria a genus of more species than the plant Pachycereus? Answer: no
Output (English): Decumaria, the woodvamps, is a genus of two species of flowering plants in the family Hydrangeaceae, one D. barbara native to the southeastern United States, and the other D. sinensis native to central China.