Write a short note on Botanical Gardens.

(N/A) $\rightarrow$ Botanical gardens are specialized gardens that maintain collections of living plants for reference purposes.
$\rightarrow$ Plant species in these gardens are grown primarily for identification. Each plant is labeled with its botanical/scientific name and its family.
$\rightarrow$ Famous botanical gardens include the Royal Botanical Garden at Kew (England),the Indian Botanical Garden in Howrah (India),and the National Botanical Research Institute in Lucknow (India).