Rosemary

Rosemary is the 23rd clue. It is a Madrigal clue and was located in the New York Subway Systems.

History
It is unknown how this clue made its way into the New York subway or who put it there.

Rosemary
Rosemary is an herb that represents constancy. Rosemary leaves are very needle-like and it has flowers that are usually white, pink, purple, or blue.