<Li> Classis 23 . Polygamia: polygamodioecious plants </Li> <Li> Classis 24 . Cryptogamia: the "flowerless" plants, including ferns, fungi, algae, and bryophytes </Li> <P> The classes based on the number of stamens were then subdivided by the number of pistils, e.g. Hexandria monogynia with six stamens and one pistil . </P> <P> Index to genera p. 1201 </P>

What is the basis for the original way that taxa were named