1899 113 But Ginkgo, Cycas, and Zamia develop both motile male cells and pollen-tubes, and so are zoidiogamous and siphonogamous at the same time.
1907 41 362 Ancient zoidogamous Gymnosperms.
2002 89 727/1 This tree, native to Eastern China, is characterized by conspicuous features such as a zoidogamous fertilization process.