from The American Heritage® Dictionary of the English Language, 4th Edition
- adj. Of or relating to a flower in which the anthers release their pollen before the stigma of the same flower is receptive.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- adj. Exhibiting protandry.
- adj. Whose male parts (anthers) becomes mature before the female ones (stigma).
- adj. Whose male parts (antheridia) release their spermatozoids before the female parts (archegonia) mature.
from the GNU version of the Collaborative International Dictionary of English
- adj. Proterandrous.
from The Century Dictionary and Cyclopedia
- In botany, same as proterandrous.
Sorry, no etymologies found.
Tree R 5 T 27 an open pollinated seedling of Crath No. 23, is protandrous, but later flowering than the Colby with respect to pistils as well as catkins, and consequently most of its pistillate flowers fail to set fruit in years like 1951 when there was no later Persian walnut pollen available.
Busseron was found to be a protandrous variety, shedding most of its pollen, and in some years all of it, before the period of receptivity of its pistillate flowers.
Mr. Reed listed as protandrous Busseron, Kentucky, Major, and Niblack varieties, whereas Butterick, Indiana, and Posey were protogynous.