5.It can be shown that plants most widely different in habit and general appearance, and having strongly marked differences in every part of the flower, even in the pollen, in the fruit, and in the cotyledons, can be crossed.
可
证明, 在习性和一般外观上差异最大的植物,
及在花的每一部分,甚至在花粉、 果实和子叶中都具有强烈显着差异的植物, 是可
杂交的。机翻