Artificial system of classification - by Linnaeus.

1. Only few characters are considered.

2. Members of different groups are not similar in hereditary pattern.

3. Stable classification. 

4. Provides limited information.

5. Cannot add new work.

6. Difficult for identifying a particular species.

7. Not related phylogenetic.

Natural system of classification - by Bentham and hooker

1. All characters are considered.

2. Member of different groups are similar in hereditary pattern. 

3. May change with advancement in knowledge. 

4. Provides plenty of useful information. 

5. Recent advancement added.

6. Plant identification easy.

7. Closely related to phylogenetic relationships.