There are at least two reasons why this should be so.

In the first place botany really presents the beginnings of sex, in their most naked and essential forms; it makes clear the nature, origin, and significance of sex.

In the second place, in dealing with plants the facts of sex can be stated to children of either sex or any age quite plainly and nakedly without any reserve, for no one nowadays regards the botanical facts of sex as in any way offensive.

The expounder of sex in plants also has on his side the advantage of being able to assert, without question, the entire beauty of the sexual process.

He is not confronted by the ignorance, bad education, and false associations which have made it so difficult either to see or to show the beauty of sex in animals.