Question

what are the demerits of j.hutchinson's system of classification ?

Answer 1

In this system the dicots have been divided into two major groups (Lignosae and Herbaceae) on the basis of their woody herbaceous evolutionary lines.

(b) The primary division on the basis of woody or herbaceous habitat has resulted into wide separation of families, which resemble one another rather closely on the basis of floral structure. Several herbaceous families in the Ranales are clearly related to the woody members of Magnoliales.

(c) This system is not of much utility from the point of view of plant classification.