Origin of Angiosperms

Abstract

IN various notes in Science and in my longer studies of cycadeoids, the view is maintained that the angiosperms must be very old, and in so far as not actually discrete, related to the older flowering gymnosperms. Such views of descent relegate gnetaleans to the position of a side or blind line as suggested by Seward. The group was even held to be angiospermous by Lignier and Tison. In any event, it pictures in a lively manner some of the types of change both vegetative and reproductive which must mark the evolution of the angiosperms from homoxylous freely flowering forerunners.