Name the scientists who contributed to the classification of plants.

(N/A) $\rightarrow$ In earlier artificial classification methods,superficial morphological characters such as the location,color,number,and shape of leaves were used.
$\rightarrow$ These systems were based mainly on vegetative characters or the structure of the androecium.
$\rightarrow$ The system proposed by $Linnaeus$ was artificial. Artificial methods gave equal weightage to vegetative and sexual characteristics.
$\rightarrow$ Natural classification systems were developed based on natural affinities among living organisms,rather than relying solely on superficial morphological characters.
$\rightarrow$ These systems incorporate internal features such as ultrastructure,anatomy,embryology,and phytochemistry.
$\rightarrow$ $A$ prominent natural classification system for flowering plants was provided by $George$ $Bentham$ and $Joseph$ $Dalton$ $Hooker$ $(1817-1911)$.