What are the drawbacks of artificial system and phylogenetic system of classification?

Demerits or short Commings of Linnaeous's system; (FOR ARTIFICAL SYSTEM)

i. Linnaeous arranged the general of plants into 24 admittedly artificial classes.

ii. It is basedon only stamen characters or sexual characters and other important morphological characters are not taken in to account.

iii. Affinity or phylogeny among plants are totally ignored.

iv. Closely related plants placed far apart and quite different species placed together.

v. Cyptogams which had little interest were all considered to twenty fourth class.

vi. The genera and species particularly of the non vascular form bear little resemblances to those admitted today.

vii. The 23 classes of seed plants were defined largely by the number of stamens and carpels, thus permitting the relatively easy assignment of most genera to a particular class, but often putting allied genera in different classes.