Task: Explanation
Input (English): Bulbophyllum is the largest genus in the orchid family Orchidaceae. With more than 2,000 species, it is also one of the largest genera of flowering plants, exceeded only by "Astragalus". This genus is abbreviated in the trade journals as Bulb. It is found throughout most of the warmer parts of the world: Africa, southern Asia, Latin America, the West Indies, and various islands in the Indian and Pacific Oceans. Question: Which genus of flowering plant has more species Bulbophyllum or Bismarckia? Answer: Bulbophyllum
Output (English):  With more than 2,000 species, it is also one of the largest genera of flowering plants, exceeded only by Astragalus.