from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. Transfer of pollen grains from the anther of a flower to the stigma of another flower of the same plant.
from the GNU version of the Collaborative International Dictionary of English
- n. Fertilization of flowers by pollen from other flowers on the same plant.
from The Century Dictionary and Cyclopedia
- n. In botany, the fecundation of a pistil by pollen from another flower of the same plant.
Nevertheless, selfing mediated via geitonogamy is the most frequent mechanism of pollen transfer.
In xenogamy the pollen comes from another PLANT; in geitonogamy from another FLOWER on the same PLANT; in autogamy from the androecium of the fertilised
The terms xenogamy, geitonogamy, and autogamy were first suggested by Kerner in
I entirely agree with you on the a priori probability of geitonogamy being more advantageous than autogamy; and
I cannot remember having ever expressed a belief that autogamy, as a general rule, was better than geitonogamy; but the cases recorded by me seem too strong not to make me suspect that there was some unknown advantage in autogamy.
Like most flowering plants they outdo birds and bees in reproductive invention, for geitonogamy can occur, in which a flower is pollinated by a neighbor on the same umbel.