6.  닭의장풀목 Commelinales

1. 꽃은 단성이며 1가화이고 화피는 내외의 질이 비슷하다 ······················································ 곡정초과 Eriocaulaceae

1. 꽃은 양성이며 외화피는 꽃받침같이 생기고 내화피는 꽃잎같다 ········································· 닭의장풀과 Commelinaceae