Recent workers have confirmed this for Lycopodium 1, and a number of Gymnosperms 2,3,4,5. The above case shows that even in the Angiosperms, and even at the extreme apex in these, periclinal ...
During the Mesozoic era (around 252 to 66 million years ago) two events led to major changes in how insects and plants interacted. Firstly, flowering plants began to replace gymnosperms – plants whose ...
Such specimens have generally been classed together as “Gymnosperms,” so that they have received little attention from palæobotanists. As I am undertaking an exhaustive study of the ...