In the greenhouses at the State University of Iowa, Radish plants (Raphanus satisvus L.) cultivated for other purposes were discovered to have some abnormal fruits with flowers developing inside in the place of ovules. These abnormal ovaries had normal ovules except for one, near the base, which was replaced by a flower or inflorescence with a perianth and several stamens in various stages of development.
Proceedings of the Iowa Academy of Science
©1957 Iowa Academy of Science, Inc.
Hulbary, R. L.; Rao, A. N.; and Michel, B. E.
"The Development of Flowers Within the Ovary of Raphanus sativus L.,"
Proceedings of the Iowa Academy of Science, 64(1), 127-131.
Available at: https://scholarworks.uni.edu/pias/vol64/iss1/13