Many flowers, on the other hand, have their organs of fructification closely enclosed, as in the great papilionaceous or pea-family; but these almost invariably present beautiful and curious adaptations in relation to the visits of insects.

另一方面，许多花的果实器官紧密封闭， 如蝶形花科或豌豆科；但这些几乎总是呈现出与昆虫来访有关的美丽而奇特的适应。