Historical reference: Do not rely on this information. It is very old. About this collection
Anatropous (bent back), a term in botany applied to the ovule when, as in the majority of flowering plants, it is inverted by the more rapid growth of one side, so as to bring the micropyle, or opening in its structural apex, near to its base of attachment, and so facilitate the entrance of the pollen tube, which commonly grows along the moist placenta.